4. Calculaţi:
a) 4(313–1) - 5( 73 – 4) * – 1768;
b) 3(272 +1) +2(12 – 3)-(8-17)(8+v7);
c) 6(12 +3)* +4(312 – 1) – 288;
d) (V6 + 2) + ( 13 – 2-2)'- (V10 – 13)(VTO +13);
e) (17 – 2)* +2(17 +1) +(37 - 3)(57+3).

Folositi formula de calcul prescurtat (dau coroana!)​