Oblicz :
7 do potęgi 2 + (x - 1) do potęgi 2 = x do potęgi 2
7²+(x-1)²=7*7+(-x)²=49+(-x)*(-x)=49+x
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7²+(x-1)²=7*7+(-x)²=49+(-x)*(-x)=49+x