计算:(4x²y^-3)÷(2^-1x²y³)
计算4(x+y)^5(x-y)^4÷[2(x+y)³*(y-x)²]
计算6x³y^6÷(1/2)y³÷(-3x²y)-(12x^4y^6-8x²y^
计算:(1)(-x²/y)·(-y²/x)³÷(-y/x)的4次方;
计算 [12(x+y)³(y-x)]³÷[4(x+y)²(x-y)]²
计算:(x+2y)(3x-5y)-(6x的四次方y²-2x²y²)÷(2x²y&
计算:(1)2/(x+y)+4y/x²-y²(2)x²/x+y-x+y
计算:(4y分之3x²)² × 3x分之2y + 2y²分之x² ÷ x分之2y
[(3x+y)²-(3x-y)²]÷(4x-2y)计算 怎么做?
运用乘法公式计算:(1)(x-y)(x+y)-(2x-y)²
计算(1)x/x+y-x/x-y (2)a+2+4/a+2 (3)x^2-y^2/xy÷(x+y)
计算:(3x³y)²*(4y)²÷(2xy)³
计算(1)3x/8y×16y²/27x² (2)(2xy-x²)÷x-2y/xy 2x-6