化简[6(x-2)²+12(x+2)(x-2)-3(x-1)²(x-2)]÷[3(2-x)]要步骤一
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
((x²-5x+6)/(12-7x+x²))²÷((x²+3x+2)/(x
6x+(2x²-3x)-(x²-1)
(2x-6)/(x²-4x+4)÷(3-x)/(x²+6x+9)×(2-x)/(x+3)
x²+3x+9/(x²-27)+6x/(9x-x²)-(x-1)/(6+2x)
(x-2)(x-3)+2(x+6)(x-5)-3(x²-7x+13)化简
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
一.求值:2(x²-x)-【x-3x(2x²+x-1)】-6x²,其中x=-½
x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2)
计算①x²-4/x²-4x+3÷x²+3x+2/x²-x②2x+6/4-4x+x
化简:[√(x^2-6x+9)/x^2-x-12]*(x^3-16x)/(x^2-3x)-1/(x+3) {x>3}
-(x²-2x)+(-3x+2x²)化简!