Question

$\sqrt{6} . \sqrt{15} + \sqrt{40}$

Answer 1

√6 . √15 + √40 =

√(6 . 15) + √40 =

√90 + √40

Simplificando:

√90 + √40 =

√(9 . 10) + √(4 . 10) =

√(3² . 10) + √(2² . 10) =

3√10 + 2√10 =

(3 + 2)√10 =

5√10