Add or subtract the radical expressions as indicated, if possible.

Question

Add or subtract the radical expressions as indicated, if possible.

A. 111m√ 5

B. 111m2√ 5

C. It can't be simplified further.

D. 21m2√ 5

Answer 1

Hello Lily

You have: (3m)sqrt(25_*5_*m²) + (m²)sqrt(36_*5) = (15m²)sqrt(5) + (6m²)sqrt(5) = (21m²)sqrt(5). So the answer is (d).

Sincerely

Michael Imbert