已知A=5x^2y-3xy^2+4xy,B=7xy^2-2xy+x^2y.若A+B+C=0,求C的值.
问题描述:
已知A=5x^2y-3xy^2+4xy,B=7xy^2-2xy+x^2y.
若A+B+C=0,求C的值.
答
C=-(A+B)=-(6X^2y+4Xy^2+2Xy)
已知A=5x^2y-3xy^2+4xy,B=7xy^2-2xy+x^2y.
若A+B+C=0,求C的值.
C=-(A+B)=-(6X^2y+4Xy^2+2Xy)