Question

Simplify x to the fourth power minus 3 times x cubed all over x squared minus 9.

A:−1
B:x minus 3 all over x plus 3
C:x cubed all over x plus 3
D:1 over 3

Answer 1

factor first the numerator.

Answer 2

How ?

Answer 3

\[\frac{x^{4} - 3x^{3}}{x^{2} - 9} = \frac{\text{Factor out GCF ->}x^{4} - 3x^{3}}{\text{Factor Difference in Squares Pettern ->}x^{2} - 9}\]