|3x+y|-(y-6)²=0计算2x²y-(3xy-5x²y)+4xy已知|3x+y|-(y-6)²=0计算2x²y-(3xy-5x²y)+4xy

问题描述:

|3x+y|-(y-6)²=0计算2x²y-(3xy-5x²y)+4xy
已知|3x+y|-(y-6)²=0计算2x²y-(3xy-5x²y)+4xy