Question

Someone please halp!
what are the x-intercepts of the graph of y+12=x^2+x

Answer 1

first of all you want to isolate y.
y = x^2 + x - 12

Now you can use the quadratic formula to solve it.
x^2 + x - 12 = 0
Do you know the formula?

Answer 2

no.

Answer 3

Maybe there is a better solution for this particular case but the general solution is

\[x = \frac{ -b \pm \sqrt{b^2 - 4ac} }{ 2a }\]

Do you recognize this?

Answer 4

oh ok yes i do

Answer 5

Good, try to plug it in and see what you get for x :)

Answer 6

ok thanks so much!

Answer 7

you can also, factor it as well