Question

Calculează:
a) 5 - (2•5 + 1) - 4.5+ 1;
b) 5+5• (9 +3 - 4);
e) (2 +2•3)2:2^4;
f) (5^2+10^5^2) : 11.
c) (7.2 + 4). 15 - 11 - 14;
d) 7. [5.3-(4.3-5)] + 3.4;​

Answer 1

Răspuns:

a) 5-(2•5+1)-4,5+1=

=5-11-4,5+1=

=-6-4,5+1=

=-10,5+1=

=-9,5

b)5+5•(9+3-4)=

=5+5•8=

=5+40=

=45

e)(2+2•3)2:2^4=

=8•2:2^4=

=16:16=

=1

f) (5^2+10^5^2):11=

=(5^2+10^10):11=

=15^12:11=

=15^12

c)(7,2+4)•15-11-14=

=11,2•15-11-14=

=17,8-11-14=

=6,8-14=

=-5,4

d)7•[5,3-(4,3-5)]+3,4=

=7•[5,3+1,3]+3,4=

=7•6,9+3,4=

=48,3+3,4=

=51,7

Sper ca te-am ajutat!