x²y-2xy²+y^3 thank you
问题描述:
x²y-2xy²+y^3 thank you
答
x²y-2xy²+y^3=Y(X^2-2XY+Y^2)=Y(X-Y)^2补充(X-Y)^2表示X-Y的平方
x²y-2xy²+y^3 thank you
x²y-2xy²+y^3=Y(X^2-2XY+Y^2)=Y(X-Y)^2补充(X-Y)^2表示X-Y的平方