Question

find the x-intercepts of y=-x2-4x+12

Answer 1

you need to factor the trinomial - can you do this?

Answer 2

oooh - it wont factor so you need to use the quadratic formula

Answer 3

firsly you ley y=0, so you have 0=-x^2-4x+12, multiply by -1 through out
0=x^2+4x-12
0=(x+6)(x-2)
x=-6 or x=2, therefore your x intercepts are (-6;0) and (2;0)

Answer 4

right sihle - i misread the question - didn't notice the - x!!

Answer 5

-x^2