(2x/3y)²×(3y/4x)³÷(四分之一xy)
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(2x/3y)²×(3y/4x)³÷(四分之一xy)
(2x/3y)²×(3y/4x)³÷(四分之一xy)
=4x²/9y²×27y³/64x³÷(四分之一xy)
=3y/16x÷xy/4
=3/4x²
如追加其它问题,
=4x²/9y²×27y³/64x³÷(四分之一xy)
=3y/16x÷xy/4
=3/4x²
如追加其它问题,
3x²y+xy²-[2xy²-4x²y+(x²y-2xy²)
[x(x²y²-xy)-y(x²-x³y)]÷3x²y
因式分解:[x(x²y²-xy)-y(x²-x³y)]÷3x²y
计算 2xy[4x²y²-3y(xy+x²y)-xy²]
-2y³+(3xy²-x²y)-2(xy²-y³)
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
计算:(-7x²y)(2x²y-3xy³+xy)
化简求值[1-(2x/x+y)]÷ (x²-2xy+y²/3x+3y)+(x²+xy/x&
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计算:(3x³y)²*(4y)²÷(2xy)³
计算:x²y-(2xy²-5x²y)+3xy²-y³
(-2/3X³y+4x²y²-1/2xy²)/(-xy/4) 急