Răspuns :
Fractia se amplifica cu 1-√3, pt a obtine formula a²-b²=(a-b)(a+b) si de aici se fac calcule.
(10√3(1-√3)) / 1-3 = (10√3-30)/(-2)= (10(√3-3))/(-2) = -5(√3-3)
(10√3(1-√3)) / 1-3 = (10√3-30)/(-2)= (10(√3-3))/(-2) = -5(√3-3)
10 √3 / ( 1+√3) = 10√3 × (√3-1) / (√3+1)(√3-1) = (10√9 - 10√3) / 2 =
=10 (3 -√3) / 2 = 5( 3 -√3)
=10 (3 -√3) / 2 = 5( 3 -√3)