Question

初一因式分解分组分解法分解因式： 1，x^3+2x²-2x-4 2，xy+2x+y+2 3，6ab+4a+9b+6

详细过程

Answer 1

(x^2-2)(x+2)
(x+1)(y+2)
(2a+3)(3b+2)

Answer 2

1\(x+2)(x-2)(x+2)
2\(x++1)(y+2)
3\(3b+2)(2a+3)