Question

分解因式：(1):2x^2+xy-6y^2-x-16y-10 (2):x^2-4xy+4y^2+x-2y-6

Answer 1

(1):2x^2+xy-6y^2-x-16y-10

=(2x-3y)(x+2y)-x-6y-10

=(2x-3y-5)(x+2y+2)

(2):x^2-4xy+4y^2+x-2y-6

=(x-2y)²+(x-2y)-6

=(x-2y+3)(x-2y-2)