化简4xy+(-2y²+3xy+x²)-(-5xy+x²+y²)
问题描述:
化简4xy+(-2y²+3xy+x²)-(-5xy+x²+y²)
答
4xy+(-2y²+3xy+x²)-(-5xy+x²+y²)=4xy-2y²+3xy+x²+5xy-x²-y²=12xy-3y²=3y(4x-y)
化简4xy+(-2y²+3xy+x²)-(-5xy+x²+y²)
4xy+(-2y²+3xy+x²)-(-5xy+x²+y²)=4xy-2y²+3xy+x²+5xy-x²-y²=12xy-3y²=3y(4x-y)