Question

-------- WILL MEDAL --------
-------- HELP PLEASE --------
Find the x-intercepts for the parabola defined by the equation below.

y = 3x^2 + 18x + 15

Answer 1

i got (5,0) and (6,0) but im not sure if that's right?

Answer 2

nah nah...... give another try

Answer 3

Try factoring out the 3 first.

Answer 4

um would it be (0,5) and (0,6)???

Answer 5

(-5,0) (-1,0)

Answer 6

3x^2 + 18x + 15 = 0
after factoring out 3
3(x^2 + 6x + 5) = 0
x^2 + 6x + 5 = 0
x^2 + x + 5x + 5 = 0
x(x + 1) + 5(x + 1) = 0
(x + 1) (x + 5) = 0
so x = -5 , -1

Answer 7

i just redid it and got that same answer thx guys.

Answer 8

Remember you are looking for the x values so always put your x values in the x spot (x ,y)