Advanced Math practice question

Answer: 6

Over the common denominator (x − 3)(x + 3) = x² − 9, the numerator is (x + 3) − (x − 3) = 6.

Common wrong answers

If you answered 0

The numerators differ: (x + 3) − (x − 3) = 6, not 0.

If you answered 2

The x-terms cancel but the constants add: 3 − (−3) = 6.

If you answered -6

Subtracting in the given order gives +6; −6 would come from reversing the fractions.

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