Question

Care este rezultatul ajutor!!!

Answer 1

$\frac{1}{ 3\sqrt{2} - 2 \sqrt{5} } = \frac{3 \sqrt{2} + 2 \sqrt{5} }{18 - 20} = - \frac{3 \sqrt{2} + 2 \sqrt{5} }{2}$

Answer 2

Amplificam cu 3√2 + 2√5.

=> (3√2 + 2√5)/[(3√2+2√5)(3√2-2√5)] =

= (3√2+2√5)/(18-20) =

= (3√2 + 2√5)/(-2) =

= - (3√2 + 2√5)/2