Question

(raiz de 10 + raiz de 3) × (raiz de 10 - raiz de 3) é igual a?​

Answer 1

Resposta:

$(\sqrt{10} + \sqrt{3} ) * (\sqrt{10} - \sqrt{3} ) = \sqrt{100} -\sqrt{30} +\sqrt{30} -\sqrt{9} = \sqrt{100} -\sqrt{9} = 10-3 = 7$