计算：[(-3x²y∧4)²·x²-2x(3x²y²)³·1

(x-y)·2(x-y)²·3(x-y)³ 计算 计算3x[xy-2x(1/y-x/3]+3y(x²-y²) (3x²y)³·（-4x)计算 计算：[(-3x²y∧4)²·x²-2x(3x²y²)³·1 计算（2x-3y)²-（4y-3x)(4y+3x) (x+3)²-2(x+5)(x+1)+(x-2) x·（9x³y-3xy²)÷（﹣3x²y) 计算 计算6x³y^6÷(1/2)y³÷(-3x²y)-(12x^4y^6-8x²y^ [(3x+y)²-(3x-y)²]÷(4x-2y)计算 怎么做? 数学用乘法公式计算(x+y+1)(x+y-1)(2x-y-3)² 计算 [12(x+y)³(y-x)]³÷[4(x+y)²（x-y)]² 1.计算：x-y分之x+y + y-3分之2x 2.计算：x+3分之x²-x-2 除以 （2-x) + x+3 计算：8x/3y·（-3y/2x²）³.