Question

Raiz quadrada de 6 multiplicado raiz quadrada de 15 mais raiz quadrada de 40

Answer 1

√6 . √15 + √40
√90 + √40
= √9.10 + √4.10
= √9.√10 + √4.√10
= 3√10 + 2√10
= (3+2)√10
= 5√10

Answer 2

$\sqrt{6}\cdot\sqrt{15}+\sqrt{40}=\sqrt{90}+\sqrt{40}=3\sqrt{10}+2\sqrt{10}=\boxed{5\sqrt{10}}$