Advanced Math practice question

Answer: 7

n² = 2n + 35, so n² − 2n − 35 = (n − 7)(n + 5) = 0. The positive number is 7.

Common wrong answers

If you answered 5

5 gives 25 on the left but 2(5) + 35 = 45 on the right.

If you answered 35

35 is the constant in the equation.

If you answered -5

−5 is the rejected negative root.

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