Question

Express your answer as a polynomial in standard form (3c+2)(c^2−6c−4) .

a) 3c^3−20c^2-24c+8
b) 3c^3−16c^2−8
c) 3c^3−12c−8
d) 3c^3−16c^2−24c−8

Answer 1

its B just simply multiply first 3c with c^2 -6c-4 and then 2 with c^2 -6c-4 and add up
i.e. 3c(c^2 -6c-4)+2(c^2 -6c-4)=(3c^3-18c^2-12c) +(2c^2-12c-8)