Question

请将下列多项式因式分解： 3x²+21x+36=? (x²-2x)²-11(x²

Answer 1

3x²+21x+36

=3(x²+7x+12)

=3(x+3)(x+4)

(x²-2x)²-11(x²-2x)+24

=(x²-2x-3)(x²-2x-8)

=(x-3)(x+1)(x-4)(x+2)