有理数x,y满足|x+y-3|+(x-y+1)²=0,求（xy²）²X（x²y）

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/11/09 00:12:26

有理数x,y满足|x+y-3|+(x-y+1)²=0,求（xy²）²X（x²y）²的值

|x+y-3|+(x-y+1)²=0
由非负性
x+y+3=0
x-y+1=0
解得
x=-2
y=-1
（xy²）²*（x²y）²
=x^6*y^6
=(xy)^6
=2^6
=64

有理数x,y满足|x+y-3|+(x-y+1)²=0,求（xy²）²X（x²y）已知非零有理数x,y满足x²-4xy+4y²=0,求x-y/x+y-y-x/x+y的值. 已知有理数x,y满足xy=4,x+y=7,则x²y+xy²=（）? 若有理数X、Y满足x²-4x+y²+6y+13=0,求xy的值已知实数x,y满足x²+y²-xy+2x-y+1=0 求x y 已知有理数X.Y满足|2X+1|+(1/2Y-6)²=0,求代数式2X²Y-1/3XY²的已知x²+y²-8x+6y+25=0,求（x-y+4xy/x-y）（x+y-4xy/x+y） 2x²-3xy=y²=0（x,y不得o）求x/y+y/x 已知实数x,y满足条件|2x+3y+1|+（x+3y+5)²=0,求式子（-2xy）²×（-y 已知有理数xy满足（x²+y²）（x²+y²-1）-6=0,则x²+y 已知x,y满足x²+y²-4x-6y+13=0,求（- y/x^3)^3÷(- 1/xy)^4.(x x>1,y>0,且满足xy=x^y,x/y=x^3y,求x+y