a(x²-1)=x(a²-1)计算
a(x²-1)=x(a²-1)计算
计算:[(-5+x)(-x-5)]² (x+3)²-(x+2)(x-1) (3x-a)(3x+a)(
计算 2a·(x-3a)=,(x+1)(x²-x+1)
计算:3a(a²-2a+1)-2a²(a-3) (2x-3y)(x+y)
计算:2/x+x²-1/x²-2x+1·x-1/x²+x;(1/a-3+1)÷a²
计算:x-y分之x - x+y分之y + x²-y²分之2xy 计算:a-1分之2a+2 除以 (a
计算:(1)(2x²-3x+1)(2x²+3x-1) (2)(a-2b+3c)²
计算,x²(x-9)= (2a+1)(a+2)+
计算:1.(4a²-3)(4a²+8) 2.(3x+1)(x+1)-(2x-1)(x-1)-3x(x
计算:(a+2)(a-2)-(2a-1)²+(a+1)²;(x-6)(x²+x+1)-x(
计算:2x/(x-2)(x+1)÷(1-x/x+1)-x²+2x/x²-4?
计算:(1)a(2a²+1) (2)(-4x²+6x)(-1/2x²)