Simplify:
√80 + √45 - √5.

Question

Accepted Answer

1. Write each root in terms of $\sqrt{5}$: $\sqrt{80}=\sqrt{16\cdot5}=4\sqrt{5}$ and $\sqrt{45}=\sqrt{9\cdot5}=3\sqrt{5}$.  
2. Add the like terms: $4\sqrt{5}+3\sqrt{5}=7\sqrt{5}$.  
3. Subtract $\sqrt{5}$: $7\sqrt{5}-\sqrt{5}=6\sqrt{5}$.

FINAL_ANSWER: a

Answer

Answer

Answer