分解因式:(1)x-4x+3 (2)x-8x+12 (3)x+8x+15
问题描述:
分解因式:(1)x-4x+3 (2)x-8x+12 (3)x+8x+15
分解因式:
(1)x-4x+3 (2)x-8x+12
(3)x+8x+15 (4)x+6x-7
(5)a-10a-11 (6)m+3m-4
(7)x+x-20 (8)x+2xy-8y
(9)a+4ab+3b (10)x-8xy-20y
答
(1)x-4x+3 =(x-3)( x-1) (2)x-8x+12=(x-2)(x-6)(3)x+8x+15 =(x+3)(x+5) (4)x+6x-7=(x+7)(x-1)(5)a-10a-11=(a-11)(a+1) (6)m+3m-4=(m+4)(m-1)(7)x+x-20 =(x+5)(x-4) (8)x+2xy-8y=(x+4y)(x-2y)(9)a...