Question

a expressao (raiz quadrada)32 - (raiz)8 / 2
equivale a
a (raiz)2
b raiz)6
c 2
d 2(raiz)2

Answer 1

Letra A
veja
$\frac{ \sqrt{32}- \sqrt{8} }{2} = \\ \\ \frac{ \sqrt{2^5}- \sqrt{2^3} }{2} = \\ \\ \frac{4 \sqrt{2}-2 \sqrt{2} }{2} = \frac{2 \sqrt{2} }{2} = \sqrt{2}$