Question

Scrieti cu un singur radical :

$a)\frac{ \sqrt{35}}{\sqrt{7}} = \\ b) \frac{ \sqrt{28}}{\sqrt{42}} = \\ c) \sqrt{\frac{1}{3}}$ · $\sqrt{27}$ 
$d) \sqrt{\frac{5}{2}} · \sqrt{\frac{20}{3}} \\ e) \frac {\sqrt{192}}{ -\sqrt{3}} \\ f) \frac {-\sqrt{250}}{ \sqrt{2}}$

Answer 1

se bazeaza pe proprietatea √a/√b=√(a/b)
in cazul parantezei tot ce e in paranteza este sub radical
a) √35/7=√5
b)√(28.27)/√42=√(4.27)/√6=√(2.9)=3√2
c)1/√3
d)√[(5.20)/2.3]=√(50/3)
e) -√(192/3)=-√64
f)-√125=-5√5