Question

so falta esse duas Pfvr ​

Answer 1

4) $\frac{6\sqrt{2} }{\sqrt{3} }= \frac{6\sqrt{2} }{\sqrt{3} }.\frac{\sqrt{3} }{\sqrt{3} }=\frac{6\sqrt{2}\sqrt{3} }{3}=\frac{6\sqrt{6} }{3}=2\sqrt{6}$

letra b)

5) $\sqrt{32}=\sqrt{4.8}=2\sqrt{8}$ correto

$\sqrt{2}.\sqrt{32}=\sqrt{64}=8$ correto

$\sqrt{28}=\sqrt{4.7}=2\sqrt{7}$ correto

$\sqrt{100}-\sqrt{64}=10-8=2=\sqrt{4}$ falsa

letra d)