Question

a Polynomial f and a factor of f are given factor f completely
f(x)= x^3-3x^2-16x-12; x-6

Answer 1

Use long division or synthetic division to divide the polynomial by x - 6.
Then you'll get a quadratic polynomial which can be factored easily.

Answer 2

ok

Answer 3

so i got x^2+3x+2

Answer 4

Now factor x^2 + 3x + 2 as a trinomial.
Find two numbers that multiply to 2 and add up to 3.