Advanced Math practice question

Answer: A. x / (x − 2)

Multiply straight across and cancel the common factor (x + 1) from the numerator of one fraction and the denominator of the other: x / (x − 2).

Why the other answers are wrong

B. x² / ((x + 1)(x − 2))

This multiplied the denominators but dropped the (x + 1) in the numerator of the second fraction. Both numerators multiply too, and then (x + 1) cancels.

C. (x + 1) / (x − 2)

The x from the first numerator was lost. After cancelling (x + 1), the numerator is x.

D. x / (x + 1)

This is just the first fraction. Multiplying by (x + 1)/(x − 2) changes the denominator to (x − 2).

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