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anonymous
 one year ago
PLEASE HELP I WILL GIVE MEDAL
Part B: Solve 4x2 12x + 5 = 0 using an appropriate method. Show the steps of your work, and explain why you chose the method used. (4 points)
anonymous
 one year ago
PLEASE HELP I WILL GIVE MEDAL Part B: Solve 4x2 12x + 5 = 0 using an appropriate method. Show the steps of your work, and explain why you chose the method used. (4 points)

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pooja195
 one year ago
Best ResponseYou've already chosen the best response.1Have you learned factoring?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This is an example of factoring trinomials :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0im stuck and need to be done within the hour

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0do you know how it factors?

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1dw:1433297189737:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0factors as \[(2x1)(2x5)=0\] would you like to know how i know it?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i will wait and let @pooja195 explain maybe i will learn something

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i have never figured out a way to factor other than to grind it til i find it

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1thanks :) Ok well fist you want to multiply the a and c value what do you get?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0this is algebra 1 incase you where wondering!

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1Whats \[\huge 5 \times 4 \]

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1good and our B value is 12 right?

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1dw:1433297395133:dw

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1Now ask yourself what multiplies into 20 BUT also adds up to 12?

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1You will have 2 numbers...

mathmate
 one year ago
Best ResponseYou've already chosen the best response.0multiplies into 20...

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1oh right multiplies into 20 but adds to 12 you are close with 10 and 2

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1you need a sign on both numbers...

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1yes! :) Now... \[\huge~(4x^22)+(10x+5)\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0After @pooja195 is done, I can summarize it all into one huge message of steps so it won't seem all over the place :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.02 for the first and 5 for the second?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thank you aureyliant!

mathmate
 one year ago
Best ResponseYou've already chosen the best response.0\(\huge~(4x^22\color{red}{x})+(10x+5)\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Are you trying to find the zeros?

mathmate
 one year ago
Best ResponseYou've already chosen the best response.0\(\huge~(4x^22\color{red}{x})\color{red}{}(10x\color{red}{}5)\)

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1You have the signs messed up but 2x and 5 is right :) \[\huge 2x(2x1)+5(2x1)\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so 2x(2x1)  5 (2x1)?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i know but im making sure that was correct XD

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1now you just combine the parenthese and the outter numbers (2x5)(2x1) and you end up with Sat's grinding :P

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You need to combine the first loner and the second loner and bring them together

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok is that all to it?

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1Then you set both equations to 0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Trying to factor by splitting the middle term 2.1 Factoring 4x212x+5 The first term is, 4x2 its coefficient is 4 . The middle term is, 12x its coefficient is 12 . The last term, "the constant", is +5 Step1 : Multiply the coefficient of the first term by the constant 4 • 5 = 20 Step2 : Find two factors of 20 whose sum equals the coefficient of the middle term, which is 12 . 20 + 1 = 21 10 + 2 = 12 That's it Step3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, 10 and 2 4x2  10x  2x  5 Step4 : Add up the first 2 terms, pulling out like factors : 2x • (2x5) Add up the last 2 terms, pulling out common factors : 1 • (2x5) Step5 : Add up the four terms of step 4 : (2x1) • (2x5) Which is the desired factorization Equation at the end of step 2 : (2x  5) • (2x  1) = 0 Step 3 : Solve (2x5)•(2x1) = 0 (This goes towards solving for the zeros but that's only if the Q is asking that, too)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Now you could either do that or use the quadratic formula

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0But thats a story for another day

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1Just set it to 0 its sooooo much more easier

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Solving a Single Variable Equation : 3.2 Solve : 2x5 = 0 Add 5 to both sides of the equation : 2x = 5 Divide both sides of the equation by 2: x = 5/2 = 2.500 Solving a Single Variable Equation : 3.3 Solve : 2x1 = 0 Add 1 to both sides of the equation : 2x = 1 Divide both sides of the equation by 2: x = 1/2 = 0.500

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can you guide me through setting through 0?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It depends on the type of factoring Q Pooja

pooja195
 one year ago
Best ResponseYou've already chosen the best response.12x5=0 we want to isolate X

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It may not be as easy to split the middle term

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1that way on the left side the 5 will cancel what does the equation look like now?

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1Yes now just divde both sides by 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Now we know the two values for x... also I summarized solving for the zeros above @cacaman

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1_ i gave u the answer :P

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1I think you answered this one earlier...

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1YES! now what are the 2 answers?

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1please get this right .

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1why so? :P and why did we choose this do you know?

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1You tell me because i dont know either.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0We chose this because it was an easier method in my books?

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1Find a better reason _

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1I guess you can write because it is a easier way to do it :/ and since its a trinomial grouping is involved...

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0there is another method to factor quadratic equation cross multiply instead group method dw:1433299203705:dw factor first and last term then cross multiply after that combine them if you get middle term then (2x5) and (2x1) are factor of that equation
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