Advanced Math practice question

Answer: 2

Subtract: x² − x = 2 → x² − x − 2 = 0 → (x − 2)(x + 1) = 0 → x = 2 (positive). Then y = 3.

Common wrong answers

If you answered 3

3 is y, not x.

If you answered 7

7 comes from setting x² = 7.

If you answered -1

−1 is the rejected negative root.

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