Question

1. Calculează:
a) (2+ 2)°; c)(1+73); e) (15 - 1);
b) (2a - 1)"; d) (a + 2)"; f) (20+5)*:
2. Efectuează:
a) (1 + 2); d) (3 + 73): 9) (1 - 2);
b) (72 - 13)°; e) (a - 13)°; h) (x + 3a)";​

Answer 1

a ) (2+2)° =4°

b)(1+73)=74

c)(15-1)=14

d)(20+5)=25

2. a .1 +2=3

b.73........