(2x/3y)²·（-3y/4x)³

(x-y)·2(x-y)²·3(x-y)³ 计算 3(x-y)²×[-4/15(y-x)³][-3/2(x-y)∧4] (x+3y-4)(2x-y) （-2x²/y）²·（-2y²/3x）³÷（2y/x）^4 x/x-y*y^2/x+y-x^3y2/x^4-y^4/x^2/x^2+y^2 (3x-y)²-2x（4x-5y）-（x+2y）² (x+y)和(x-y)各看成一个整体,合并同类项2(x+y)-3(x-y)²+3(x+y)+4(x-y)
(2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y) 计算6x³y^6÷(1/2)y³÷(-3x²y)-(12x^4y^6-8x²y^ 合并同类项：-6x²y-x+5x²y-2x+x³y+3x x四次方+x³-3x²-4x-4 x(x-1)+y(y+1)-2xy (x-2)³-(y- 化简 3(X-Y)²-4(X-Y)+7(X-Y)-6(X-Y)²