Question

Solve v^3+4v^2-4v-16=0

Answer 1

v=+2, -2 or -4, factor by grouping

Answer 2

How do you factor it though?

Answer 3

\[v^3 + 4v^2 - 4v - 16 = 0\], right??

Answer 4

v squared comes out of first two terms

Answer 5

- 4 comes out of last two

Answer 6

this makes a (v+4) in the new terms created

Answer 7

I have v^2(v+4)-4(v+4)=0 then Idk what to do.

Answer 8

ok now do you see that (v+4) is in both terms, factor it out so you have (v+4)(v^2-4)

Answer 9

Oh! Ok. Thanks :)

Answer 10

sure