求助解下列方程,不等式! (1)(X+2)(X-3)-(X-6)(X-1)=0 (2)(-8X+3)(9X-2)≤(X-4)(1-72X)
问题描述:
求助解下列方程,不等式! (1)(X+2)(X-3)-(X-6)(X-1)=0 (2)(-8X+3)(9X-2)≤(X-4)(1-72X)
答
(x+2)(x-3)-(x-6)(x-1)=0
x^2-x-6-x^2+7x-6=0
6x-12=0
x=2
(-8x+3)(9x-2)-72x^2+16x+27x-643x-6246x>=-2
x>=-1/123