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If \(a\) and \(b\) are integers then what is the remainder when \(a^2+b^2\) is divided by \(7?\)

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by VJesus12 » Fri Jun 11, 2021 7:59 am

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If \(a\) and \(b\) are integers then what is the remainder when \(a^2+b^2\) is divided by \(7?\)

(1) \(a-b=4\)

(2) \(a^2b^3\) is divisible by \(14.\)

Answer: C

Source: e-GMAT
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