A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
x2  3x = 4 (the 2 is smal)
anonymous
 5 years ago
x2  3x = 4 (the 2 is smal)

This Question is Closed

lilg132
 5 years ago
Best ResponseYou've already chosen the best response.0x^2  3x  4 = 0 what two numbers added together give you 3 and multiply to give you 4?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0A) 1 4 B) 1 4 C) 1 4 D) 1 4

Mimi_x3
 5 years ago
Best ResponseYou've already chosen the best response.0Just use wolfram alpha if you are lazy

lilg132
 5 years ago
Best ResponseYou've already chosen the best response.0i'm not giving you anymore answers if you dont want to learn

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i wanna learn just not too good at this lol :)

lilg132
 5 years ago
Best ResponseYou've already chosen the best response.0well stop guessing and try and understand

lilg132
 5 years ago
Best ResponseYou've already chosen the best response.0what two numbers can i add together to give me 3

lilg132
 5 years ago
Best ResponseYou've already chosen the best response.0no that will give you +3 not 3

lilg132
 5 years ago
Best ResponseYou've already chosen the best response.0try taking a look at where i said BIG CLUE !

lilg132
 5 years ago
Best ResponseYou've already chosen the best response.0good your getting there

lilg132
 5 years ago
Best ResponseYou've already chosen the best response.0that would give you 3 but we need to find two numbers that give you 3 and the same two numbers need to multiply to give you 4

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0plz i only have 10 minutes left

lilg132
 5 years ago
Best ResponseYou've already chosen the best response.0its touching if you want to learn you will make more time

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0plz i want to learn but just dont have time right now

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok so you have x2  3x = 4 the first thing you want to do is equal this to zero, we can do that by subtracting 4 x^23x4=0 Now, like what that person said, what can you multiply to get 4, and add to get 3? now let's guess and check. 1 * 4 = 4, but 1 + 4 = 5, ew that won't work hmm. 1 * 4 = 4, and 1  4 = 3 that works! now we use these two numbers, 1 and 4 and plug it back into the original equation (take the 3x away) x^2+1x4x4 basically what we did is split the 3 apart, because you see, 1x4x equals 3x so it's basically the same thing, but the point of doing this is that you can factor by grouping. so lets group the first two terms, x^2 and 1x, what two numbers, or variables, go into both of these? well, x does. x Now what's x divided by x^2? that's just x x ( x now what's x divided by 1x? 1. x ( x +1 ) you know this is correct when you use the distributive propetry and get what you use to havedw:1323571839146:dw now, let's factor the other two terms, 4x and 4 these look like they both go into 4 4 now, 4x divided by 4? just x. 4 ( x 4 divided by 4? 1. 4 (x+1) Now, lets bring it all together. the numbers in the parentheses should be the same (you got x+1 in both, so it's right. (x+1) now let's bring over the numbers that aren't in parentheses x and 4 just put those in parentheses like (x4) the factored version is (x+1)(x4) now, we have to equal both of these to zero and solve like a regular algebra problem to get your two solutions x+1=0 subtract 1 from both sides x=1 do the same thing to the other one x4=0 add 4 to both sides x=4 those are your two solutions x=1 and x=4

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0if you don't understand something tell me

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so what letter is answer?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i just typed it above

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0thanx hun that worked :) <3

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0well didn't you read what i wrote?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Well, all she cares is the letter

lilg132
 5 years ago
Best ResponseYou've already chosen the best response.0no you just wasted your time neverforgetvivistee

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0big kisses hun, thanx :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i put real thought into that

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0flutter you hot cutie u stupid feather

lilg132
 5 years ago
Best ResponseYou've already chosen the best response.0i've been trying for a while as well now but she just doesnt want to learn she doesn't have 'time' to learn apperently

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0She doesn't even understand the very basic of algebra.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.