Question

Using complete sentences, explain how to completely factor 2x^2 - 8x - 42.

Answer 1

I don't know.

Answer 2

Lol jk <3

Answer 3

divide by 2 first

Answer 4

Find the GCF which would be 2. Put it on the outside of the problem.

Answer 5

Find the x intercepts
f(x)=2x^2 +8x-42
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Let y = 0
2x^2 + 8x - 42 = 0

2(x^2 + 4x - 21) = 0
Factor:
2(x+7)(x-3) = 0
x = -7 or x = 3

Answer 6

x=7, x=-3