Use the rational zeroes theorem to factor the function f(x) = x3 – 21x + 20 completely. (A) (x - 1)(x + 4)(x + 5)
(B) (x + 1)(x - 4)(x + 5)
(C) (x - 1)(x – 4)(x - 5)
(D) (x - 1)(x – 4)(x + 5)
(E) (x + 1)(x - 4)(x - 5)

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1

σк тнє αиѕωєя ιѕ (α.)

нσρє ι ¢συℓ∂ нєℓρ υ

answer: 1 box of pens at the store ? ? pens in the box

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).