Question

racionalize o denominador de 7 sobre a raiz de 2

Answer 1

Resolução:

$\mathsf{\dfrac{7}{\sqrt{2}}}\\\\\\\mathsf{\dfrac{7}{\sqrt{2}}\cdot \dfrac{\sqrt{2}}{\sqrt{2}}}\\\\\\\mathsf{\dfrac{7\sqrt{2}}{\left(\sqrt{2}\right)^2}}\\\\\\\boxed{\boxed{\mathsf{\frac{7\sqrt{2}}{2}}}}\: \: \checkmark$