若xx-2x+yy+6y+10=0 求xx-yyy的值

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若xx-2x+yy+6y+10=0求xx-yyy的值若xx-2x+yy+6y+10=0求xx-yyy的值若xx-2x+yy+6y+10=0求xx-yyy的值xx-2x+yy+6y+10=0则xx-2x

若xx-2x+yy+6y+10=0 求xx-yyy的值
若xx-2x+yy+6y+10=0 求xx-yyy的值

若xx-2x+yy+6y+10=0 求xx-yyy的值
xx-2x+yy+6y+10=0
则xx-2x+1+yy+6y+9=0
所以(x-1)²+(y+3)²=0
所以x-1=0,y+3=0
所以x=1,y=-3
xx-yyy=1×1+(-3)×(-3)×(-3)=1-27=-26

xx-2x+yy+6y+10=0
(x-1)²+(y+3)²=0
x-1=0 y+3=0
x=1 y=-3
xx-yyy
=1-(-27)
=28

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