Question

Calcule 2 raiz quadrada de 40 - 5 raiz quadrada de 75 .
Gente é pra agora me ajudem

Answer 1

Simplificando teremos:

$\\\mathsf{2\sqrt{40}-5\sqrt{75}}\\\mathsf{2\sqrt{4\cdot 10}-5\sqrt{3\cdot 25}}\\\mathsf{2\left(\sqrt{4}\cdot \sqrt{10}\right)-5\left(\sqrt{3}\cdot \sqrt{25}\right)}\\\mathsf{2\left(2\cdot \sqrt{10}\right)-5\left(\sqrt{3}\cdot 5\right)}\\\boxed{\mathsf{4\sqrt{10}-25\sqrt{3}}}\: \: \checkmark$