Question

Find the x-intercepts for the parabola defined by the equation below.

y = 3x^2 + 18x + 15 so i would do x+3=0 and x+15=0 and solve did i do that right

Answer 1

No...factor out the 3 from the equation leaving \[3(x^{2}+6x+5)\])

Answer 2

Now factor the trinomial...

Answer 3

3x^2 + 18x+5

Answer 4

no + 15

Answer 5

Once factored out, you can leave the 3 alone for awhile.
What multiplies to 5 and adds to 6

Answer 6

nothing..

Answer 7

36?

Answer 8

5x1=5 5+1=6

Answer 9

(x+1)(x+5) x+1=0 x+5=0 solve for x