Mathematics

Gerald

1 April, 01:01

A student simplified a rational expression as

shown.

Which of the following mistakes did the student

make?

20 - 5. x2

x² + x - 6

The student did not factor the numerator

correctly.

The student could not divide out (2 - x) and (x

-2) as written.

5 (4 - r?)

(x - 2) (x + 3)

5 (2 - x) (2 + x)

(x - 2) (x+3)

5 (x + 2)

(r + 3)

The student did not factor the denominator

correctly.

The student needed to simplify further by

dividing out x.