已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y 就是已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y /4y就是除以4y

来源：学生作业帮助网编辑：作业帮时间：2024/11/08 11:01:11

已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y 就是已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y /4y就是除以4y
已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y
已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y 就是已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y /4y就是除以4y

已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y 就是已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y /4y就是除以4y
先化简[(x²+y²)-(x-y)²+2y(x-y)]/4y
[(x²+y²)-(x-y)²+2y(x-y)]/4y
=[x²+y²-(x²+y²-2xy)+2xy-2y²]/4y
=[x²+y²-x²-y²+2xy+2xy-2y²]/4y
=[4xy-2y²]/4y
=[4x-2y]/4
=2*(2x-y)/4
=2*10/4
=5

已知x²y²+x²+y²=10xy-16 求x,y 已知x²-4x+y²-10y+29=0.求x²y²+2x³y²+[x²]²y²的值. 已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y 就是已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y /4y就是除以4y 已知x²+4x+y²-10y+29=0 求【x+2y】÷【x²-2y²】的值已知x²+y²=2,x+y=1,求10xy的值已知x²+y²=2,x+y=1,求10xy的值已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]÷4y的值已知x/y=3,求x²+2xy-3y²/x²-2xy+y² 已知x/y=3,求x²+2xy-3y²/x²-xy+y²的值已知:x²-6x+8y+y²+25=0,求x²+2xy+y² 已知(x+y)²;=8,(x-y)²;=4,求x²+y² 已知x²+y²-2x-6y=－10求x²ºº4 y－²的值 (x的2004次方）已知2X+3Y+4Z=10,求X²+3Y²+Z²的最小值已知x² -XY = 2,Y² -XY= 5,求x² - 4x Y+ Y² = 2x² + xY -3Y² = x² 已知x² -XY = 2,Y² -XY= 5,求x² - 4x Y+ Y² = 2x² + xY -3Y² = x² + xY- 2Y² =求x² - 4x Y+ Y² = 已知x²+2x+y²-6y+10=0,求x的2009次方×y的值已知4x²+y²-4x+6y+10=0,求2x-5y的平方根已知(x²+y²)(x²+y²-6)+9=0 ,求x²+y²的值. 已知X²-2X+4Y²-12Y+10=0,求3X²-2Y²的值