(x+2)(x-3)>(-x-3)² -1 (2x-5)(2x+5)<(x-3)(4x+7)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
(x+2/x+1)-(x+4/x+3)-(x+3/x+2)+(x+5/x+4)
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
(x+2)(x-3)>(-x-3)² -1 (2x-5)(2x+5)<(x-3)(4x+7)
化简 x(x-1)+2x(x+1)-3x(2x-5)
x(x平方-1)+2X平方(X+1)-3X(2X-5)帮个忙
(x-1)^3(x+1)(x-2)/(x+4)
(x+1)(x+2)(x+3)(x+4)+1
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
x(2x-5)>2x的平方-3x-4 (x+1)(x-3)+8x>(x+5)(x-5)-2 解不等式组
5x/(x+3)(x+2)+(2x-5)/(x-4)(x+3)=(7x-70)/(x+2)(x+4)
x(x^2-1)+2x^2 *(x+1)-3x*(2x-5)=x(3x^2-4x)-28