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raebaby420
Group Title
Please Help c:
What are the solutions to the following system of equations?
y = x2 + 12x + 30
8x − y = 10
(−4, −2) and (2, 5)
(−2, −4) and (2, 5)
(−2, −4) and (5, 2)
No Real Solutions
 10 months ago
 10 months ago
raebaby420 Group Title
Please Help c: What are the solutions to the following system of equations? y = x2 + 12x + 30 8x − y = 10 (−4, −2) and (2, 5) (−2, −4) and (2, 5) (−2, −4) and (5, 2) No Real Solutions
 10 months ago
 10 months ago

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raebaby420 Group TitleBest ResponseYou've already chosen the best response.0
What is the solution to the following system of equations? y = x2 + 10x + 11 y = x2 + x − 7 (−2, −5) (2, −5) (−2, 5)
 10 months ago

campbell_st Group TitleBest ResponseYou've already chosen the best response.3
rewrite the 2nd equation with y as the subject y = 8x  10 now equate it to the 1st equation and you get \[8x  10 = x^2 + 12x + 10\] now you have 1 equation in 1 unknown to solve
 10 months ago

myko Group TitleBest ResponseYou've already chosen the best response.0
y = x2 + 12x + 30 8x − y = 10 express y from second equation: \(y=8x10\) substitute in the 1º equation: \(8x10=x^2 + 12x + 30\) rearange terms: \(x^2+4x+40=0\) solve this. You will get 2 solutions, which later substitute in the 2º equation to get corresponding y value
 10 months ago

campbell_st Group TitleBest ResponseYou've already chosen the best response.3
oops should be ' \[8x  10 = x^2 + 12x + 30\] just solve for x
 10 months ago

raebaby420 Group TitleBest ResponseYou've already chosen the best response.0
Mm.. ill try. One sec, ill let you know what I get
 10 months ago

campbell_st Group TitleBest ResponseYou've already chosen the best response.3
and can you check your equations as they may be a typo in them...
 10 months ago

nirmalnema Group TitleBest ResponseYou've already chosen the best response.0
you can get the ans by by making the quadratic eq..in x
 10 months ago

missMob Group TitleBest ResponseYou've already chosen the best response.0
we will put all the x on one side
 10 months ago

raebaby420 Group TitleBest ResponseYou've already chosen the best response.0
The what? LOL
 10 months ago

campbell_st Group TitleBest ResponseYou've already chosen the best response.3
because based on the information there are any solutions that are real numbers
 10 months ago

campbell_st Group TitleBest ResponseYou've already chosen the best response.3
oops... which is an option
 10 months ago

campbell_st Group TitleBest ResponseYou've already chosen the best response.3
sorry...
 10 months ago

raebaby420 Group TitleBest ResponseYou've already chosen the best response.0
Ok.. so its D.. cool
 10 months ago

missMob Group TitleBest ResponseYou've already chosen the best response.0
maths is confusing
 10 months ago

raebaby420 Group TitleBest ResponseYou've already chosen the best response.0
But idk how to get D
 10 months ago

missMob Group TitleBest ResponseYou've already chosen the best response.0
*takes out the gun shoots maths*
 10 months ago

campbell_st Group TitleBest ResponseYou've already chosen the best response.3
well do you know about the discriminant...? thats how you check...
 10 months ago

raebaby420 Group TitleBest ResponseYou've already chosen the best response.0
lol...
 10 months ago

raebaby420 Group TitleBest ResponseYou've already chosen the best response.0
No.. but I got 8x10=x2+12x+30 so far..
 10 months ago

raebaby420 Group TitleBest ResponseYou've already chosen the best response.0
What do I do from there?
 10 months ago

campbell_st Group TitleBest ResponseYou've already chosen the best response.3
subtract 8x from both sides... then add 10 to both sides of the equation...
 10 months ago

raebaby420 Group TitleBest ResponseYou've already chosen the best response.0
Oh.. I knew that. For some reason I thought I needed to bring my X from the right to the left.
 10 months ago

raebaby420 Group TitleBest ResponseYou've already chosen the best response.0
Ok.. so I got x=x2+4x+40 Is that right?
 10 months ago

nirmalnema Group TitleBest ResponseYou've already chosen the best response.0
ya you got it right
 10 months ago

campbell_st Group TitleBest ResponseYou've already chosen the best response.3
and the discriminant is for a quadratic \[ax^2 + bx + c = 0\] thew discriminant is \[b^2  4ac\] you have a = 1, b = 4 and c = 40 it will be less than zero... meaning complex roots
 10 months ago

raebaby420 Group TitleBest ResponseYou've already chosen the best response.0
Sooo its D.
 10 months ago

raebaby420 Group TitleBest ResponseYou've already chosen the best response.0
Thanks everyone! c:
 10 months ago
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