Question

necesito resolver eso​

Answer 1

Respuesta:

$-\sqrt{45}+\sqrt{20}-7\sqrt{5}$

$\sqrt{45}=3\sqrt{5}$

$\sqrt{20}=2\sqrt{5}$

$-3\sqrt{5}+2\sqrt{5}-7\sqrt{5}=-8\sqrt{5}$

$\boxed{-8\sqrt{5}}$

$\sqrt{48}-5\sqrt{12}+\sqrt{27}$

$\sqrt{48}=4\sqrt{3}$

$\sqrt{27}=3\sqrt{3}$

$4\sqrt{3}-10\sqrt{3}+3\sqrt{3}=-3\sqrt{3}$

$\boxed{-3\sqrt{3}}$

Saludos...