Mathematics, 24.06.2019 22:30, klk597703

If \[x^2 - 7x + c = (x + a)^2\]for some constants $a$ and $c,$ then find $a.$

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If \[x^2 - 7x + c = (x + a)^2\]for some constants $a$ and $c,$ then find $a.$...