Question

Factorizar, por favor

Answer 1

a) 3X^3-12X^2+12X

=3X(X^2-4X+4)

=3X(x^2-2×X×2+4)

=3X(x^2-2×X×2+2^2)

=3X(X-2)^2

b) X^3-5X^2-9X+45

=X^2(X-5)-9X+45

=X^2(X-5)-9(X-5)

=(X-5)(X^2-9)

=(X-5)(X-3)(X+3)