初一因式分解、挺多的、麻烦把过程也给一下、在线等、速度速度速度速度~~~ 0.01.-p(q+r-1)-q(r+q-1)+(1-q-r)^22.(a+2)(a-3)(a^2 -7)+(2+a)(3-a)(a+3)3.x(b+c-d)-y(d-b-c)-b-c+d4.3x^n (1-x)-2(x^n -2x^n+1)5.ab(x-2y)-ac(2y-x)+ad(2x-4y)6.-1/2x^3 y+1/4x^2 y^2-1/8x^3 y^3
问题描述:
初一因式分解、挺多的、麻烦把过程也给一下、在线等、速度速度速度速度~~~ 0.0
1.-p(q+r-1)-q(r+q-1)+(1-q-r)^2
2.(a+2)(a-3)(a^2 -7)+(2+a)(3-a)(a+3)
3.x(b+c-d)-y(d-b-c)-b-c+d
4.3x^n (1-x)-2(x^n -2x^n+1)
5.ab(x-2y)-ac(2y-x)+ad(2x-4y)
6.-1/2x^3 y+1/4x^2 y^2-1/8x^3 y^3
答
1,原式= -(p+q)(q+r-1)+(q+r-1)^2=(q+r-1)[(q+r-1)-(p+q)]=(q+r-1)( r-q-1)2,原式=(a+2)(a-3)[(a^2-7)-(a+3)]=(a+2)(a-3)(a^2-a-10)3,原式=x(b+c-d)+y(b+c-d)-(b+c-d)=(b+c-d)(x+y-1)4,原式=3x^n-3x^(n+1)-2x^n+4x...