(3x+2y)(4x+5y)+(2x)^2*(3y)^3/36x^2y+5xy =12x^2+23xy+10y^2+4x^2*27y^3/36x^2y+5xy
=12x^2+28xy+10y^2+3y^2=12x^2+28xy+13y^2
先化简再求值(3x+2y)(4x+5y)+(2x)^2*(3y)^3/36x^2y+5xy
先化简再求值(3x+2y)(4x+5y)+(2x)^2*(3y)^3/36x^2y+5xy
数学人气:410 ℃时间:2019-08-18 06:04:45
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