Advanced Math practice question

Answer: 3

Rearrange: x² − 6x + 9 = 0, which is (x − 3)² = 0. So x = 3 is the only solution. Check: 9 + 9 = 18 = 6(3).

Common wrong answers

If you answered 9

9 is the constant term; x = 9 gives 90 ≠ 54.

If you answered -3

−3 gives 9 + 9 = 18 on the left but −18 on the right.

If you answered 1.5

1.5 is 9/6, treating the equation as 9 = 6x.

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