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X²+(X+2)²+(X+4)²=251
x^2+x^2+4x+4+x^2+8x+16=251
3x^2+12x-231=0
x^2+4x-77=0,
(x+11)(x-7)=0
x1=11,x2=7
X²+(17-X)²=169,
x^2+17^2-34x+x^2=169,
2x^2-34x-120=0,
x^2-17x-60=0,
(x-20)(x+3)=0
x1=20,x2=-3
80-4X²=64
-4x^2=64-80
-4x^2=-16
x^2=4
x1=2,x2=-2
x^2+x^2+4x+4+x^2+8x+16=251
3x^2+12x-231=0
x^2+4x-77=0,
(x+11)(x-7)=0
x1=11,x2=7
X²+(17-X)²=169,
x^2+17^2-34x+x^2=169,
2x^2-34x-120=0,
x^2-17x-60=0,
(x-20)(x+3)=0
x1=20,x2=-3
80-4X²=64
-4x^2=64-80
-4x^2=-16
x^2=4
x1=2,x2=-2
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