Question

factor f(x)=4x^3-5x^2-79x+20 into linear factors given that -4is a zero? please help

Answer 1

If you know that x = -4 is a zero does that meant that (x+4)=0?

Answer 2

yes i believe so

Answer 3

Does that mean that you should be able to factor f(x)=4x^3-5x^2-79x+20
by (x+4) to get a quadratic? try to divide f(x) by (x+4)

Answer 4

gotta go, good luck!