Advanced Math practice question

Answer: 64

(a + b)² = a² + 2ab + b² = 34 + 2(15) = 64.

Common wrong answers

If you answered 4

4 is (a − b)² = 34 − 30.

If you answered 34

34 leaves out the 2ab term entirely.

If you answered 49

49 adds ab once instead of twice.

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