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x²+(x+1)²=145
x²+(x²+2x+1)=145
2x²+2x-144=0
x²+x-72=0
x +9 → x=-9
x -8 → x=8
Los valores son 8 y 9 o -9 y -8
x²+y²=145
x²+(x+1)²=145
x²+x²+2x+1=145
2x²+2x+1=145
2(x²+x)=144
x²+x=72
x1=8
x²=-9