计算(x-y)(y-x)²·(x-y)³;(b-a)(a-b)³(a-b)的5次方.
计算(x-y)(y-x)²·(x-y)³;(b-a)(a-b)³(a-b)的5次方.
(x-y)³-x+y (a+b)²-(a-b)² (x-3)³-4x+12
因式分解(a-b)²(x-y)-(b-a)(y-x)²=(a-b)(x-y)×( )
通分x/a(x-y),y/b(y-x) 通分 a/(y-x)的平方,b/(x-y)*(x+y)
利用乘法公式计算(x+y)(x²+y²)(x-y)(x的四次方+y四次方)(a-2b+3)(a+2b
计算:(a-b)(x-y)-(b-a)(x+y) 4+12(x-y)+9(x-y)²
因式分解ab²(x-y)的m次方+a²b(x-y)的m+1次方
分解公因式的题 x(a-x)(a-y)-y(x-a)(y-a)-ab(a-b)^2+a(b-a)^2a^3b-ab2ab
对于有理数a,b,定义:a*b=3a-2b,若x,y均为有理数,试计算【(x+y)*(x-y)】*2 x.
下列能用平方差公式计算的是() A(-x+y)(x-y) B.(x-1)(-1-x) C.(2x+y)(2y-x) D.
计算:(1) (2x-3y)+(5x+4y) (2) (8a-7b)-(4a-5b)
x的4次方-x²;a(x²-y²)+b(y²-x²);-27x的4次方