Question

racionalize aa expressões
A-5/√2
b-8/√3
c-6/√7
d-12/√5
e-9/√6​

Answer 1

Resposta:

a) $\frac{5}{\sqrt{2}} = \frac{5}{\sqrt{2}} *\frac{\sqrt{2}}{\sqrt{2}} = \frac{5\sqrt{2}}{2}.$

b) $\frac{8}{\sqrt{3}} = \frac{8}{\sqrt{3}} *\frac{\sqrt{3} }{\sqrt{3} } = \frac{8\sqrt{3} }{3}.$

c) $\frac{6}{\sqrt{7}} = \frac{6}{\sqrt{7}} *\frac{\sqrt{7} }{\sqrt{7} } = \frac{6\sqrt{7} }{7}.$

d) $\frac{12}{\sqrt{5}} = \frac{12}{\sqrt{5}} *\frac{\sqrt{5} }{\sqrt{5} } = \frac{12\sqrt{5} }{5}.$

e) $\frac{9}{\sqrt{6}} = \frac{9}{\sqrt{6}} *\frac{\sqrt{6} }{\sqrt{6} } = \frac{9\sqrt{6} }{6} = \frac{9\sqrt{3} }{2}.$