Cube Roots of Compound Expressions.

+ 2 a ) ( 1 − 2 a ) , 1 ( 1 + 2 a ) ( 1 − 2 a ) .

4. ${\displaystyle \frac{9}{(4+x)(4-x)}}$, ${\displaystyle \frac{(4-x{)}^2}{(4+x)(4-x)}}$.

5. ${\displaystyle \frac{a^2}{(3-a)(9+3a+a^2)}}$, ${\displaystyle \frac{a(9+3a+a^2)}{(3-a)(9+3a+a^2)}}$.

6. ${\displaystyle \frac{x+2}{(x+2)(x-2)(x-3)}}$, ${\displaystyle \frac{x-2}{(x+2)(x-2)(x-3)}}$.

Exercise46.

1. ${\displaystyle \frac{4x+2}{5}}$.

2. ${\displaystyle \frac{13x+3}{12}}$.

3. ${\displaystyle \frac{5(9x-13)}{42}}$.

4. ${\displaystyle \frac{51x+31}{36}}$.