Question

Qual o valor de (raiz de 112) + (raiz de 252) - (raiz de 343)

Answer 1

$\sqrt{112} + \sqrt{252} - \sqrt{343} = > \\ \\ 4 \sqrt{7} + 6 \sqrt{7} - 7 \sqrt{7} = \\ \\ 3 \sqrt{7}$