simplify!!!!!!!!!!!!!!!!!!!!

Question

3√5-2√7+√45-√28?

Answer 1

The expression is 3√5 - 2√7 + √45 - √28.

Write factors of 45 and 28.

= 3√5 - 2√7 + √(3*3*5) - √(2*2*7)

= 3√5 - 2√7 + √(3² * 5) - √(2² * 7)

= 3√5 - 2√7 + 3√5 - 2√7

Group like terms.

= 3√5+ 3√5 - 2√7 - 2√7

Combine like terms.

= 6√5 - 4√7

The simplified expression is 6√5 - 4√7.