4x²y-8xy²+7-4x²y+10xy²-4 -4x²-5y

来源：学生作业帮编辑：百度作业网作业帮分类：数学作业时间：2024/07/31 09:05:11

4x²y-8xy²+7-4x²y+10xy²-4 -4x²-5y²-5x+3y-9-4y+3+x²+5x
-4x²-5y²-5x+3y-9-4y+3+x²+5x 3x²-1-2x-5+3x-x²初中数学求解

4x²y-8xy²+7-4x²y+10xy²-4
=(4-4)x²y+(-8+10)xy²+(7-4)
=2xy²+3
-4x²-5y²-5x+3y-9-4y+3+x²+5x
=(-4+1)x²-5y²+(-5+5)x+(3-4)y+(-9+3)
=-3x²-5y²-y-6
3x²-1-2x-5+3x-x²
=(3-1)x²+(-2+3)x+(-1-5)
=2x²+x-6

已知x²+y²-8x+6y+25=0,求（x-y+4xy/x-y）（x+y-4xy/x+y） 4x²y-8xy²+7-4x²y+10xy²-4 -4x²-5y x²+xy/(x-4y)(x+y),其中x=4,y=-1 (-x-2y)(x²-2xy+4y²) 化简(x²y-4y²)/(x²+4xy+4y²)*[(4xy)/(x-2y)+x 3x²y+xy²-[2xy²-4x²y+（x²y-2xy²） (2x²y-3xy²)-3(x²y-2xy²)+2（x²y-4xy&# 已知x²-y²=-8,xy=-3,求5x²-3xy+4y²+11xy-7x -3(xy-2x²)-[y²-(5xy-4x²)+2xy] 因式分解：x²-y²+4xy -4x²y-8xy²+2x²y-3xy² -2xy-4x²y+8三次方y