Question

What polynomial has roots of –4, 2, and 5 ?

Answer 1

x3 – x2 – 22x + 40

x3 + x2 – 22x – 40

x3 + 3x2 – 18x – 40

x3 – 3x2 – 18x + 40

Answer 2

try 1?

Answer 3

x = -4 or x = 2 or x = 5

x+4=0 or x-2=0 or x-5=0

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

See where to go from here?