Question

4. Calculaţi: Foloseste formula de calcul prescurtat.

a) 4(3√3-1)² -5(√3-4)²-√768;
b) 3(2√2+1)² +2(√2-3)²-(8-√7)(8+√7);
c) 6(√2+3)²+4(3√2-1)²-√288;
d) (√6+2)²+(√3-2√2)²-(√10-√3)(√10+√3);
e) (√7-2)² +2(√7+1)²+(√7-3)(√7+3).


Dau coroana doar daca raspunsul foloseste formula de calcul prescurtat.​

Answer 1

a)17

b) -8

c) 142

d) 14

e) 25