9000088808

Level: 
Project ID: 
9000088808
Accepted: 
1
Clonable: 
0
Easy: 
1
Find the common denominator of the following three fractions. \[ \text{$ \frac{a} {a^{2}-ab}\ ,\qquad \frac{-b} {a^{2}-b^{2}} \ ,\qquad \frac{2b} {ab+b^{2}} $} \]
\(ab(a^{2} - b^{2})\)
\(ab(a - b)\)
\(ab(a + b)\)
\(ab(a + b)^{2}\)