(3x+2y)(4x-5y)+(2x)²×(3y)³÷36x²y+5xy,其中x=1,y=﹣1
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(3x+2y)(4x-5y)+(2x)²×(3y)³÷36x²y+5xy,其中x=1,y=﹣1
(3x+2y)(4x-5y)+(2x)²×(3y)³÷36x²y+5xy,其中x=1,y=﹣1
(3x+2y)(4x-5y)+(2x)²×(3y)³÷36x²y+5xy,其中x=1,y=﹣1
(3x+2y)(4x-5y)+(2x)²×(3y)³÷36x²y+5xy
=12x²-7xy-10y²+3y²+5xy
=12x²-2xy-7y²
其中x=1,y=﹣1
原式=12+2-7=7
(x-y)^3×(y-x)^4+(x-y)^2×(y-x)^5
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