Question

what polynomial has roots -4, 2, 5

Answer 1

x = -4 x = 2 x = 5

can be written as,

x + 4 x - 2 x - 5

Now.

Answer 2

(x+4)(x-2)(x-5) = 0

Solve.

Answer 3

\( f(x)=(x+4)(x-2)(x-5)= 40-18 x-3 x^2+x^3\)