Question

a=(2^40+2^39+2^38)÷7
va rog repede ​
in maxim 3 min.

Answer 1

Răspuns:

${2}^{38} ( {2}^{2} + 2 + 1) \div 7 = {2}^{38} \times 7 \div 7 = {2}^{38}$

Answer 2

Răspuns:

A=[2^38(2^2+2^1+1)] : 7

A= (2^38*7):7

A= 2^38