Question

x^3+4x^2+8x+32
factor four term polynomial by grouping

Answer 1

Take the first two term, and factor out the GCF.

Do the same with the third and fourth terms.

You should see the answer in the result.

Answer 2

= x^2(x+4)-8(x+4)
=(x^2-8)(x+4)

Answer 3

..?