Question

Calculati!!
a)√2(√2+√3) - √3(2√3+√2)=

Answer 1

desfaci parantezele si rezulta

2+rad6-6-rad6=-4

Answer 2

$\sqrt{2} ( \sqrt{2} + \sqrt{3} )- \sqrt{3} (2 \sqrt{3} + \sqrt{2} )= \\ =2+ \sqrt{6} -6- \sqrt{6} = \\ =2-6= \\ =-4$