9000146207

Level: 
Project ID: 
9000146207
Accepted: 
1
Clonable: 
0
Easy: 
0
Factor the following expression. \[ 4a^{2} -\left (a - 1\right )^{2} \]
\(\left (a + 1\right )\left (3a - 1\right )\)
\(\left (a - 1\right )\left (3a - 1\right )\)
\(\left (a + 1\right )\left (3a + 1\right )\)
\(\left (a - 1\right )\left (3a + 1\right )\)