Question

se a=2³,b=3³ e c=2⁴,calcule 5a+2b-c

Answer 1

a= 2 >3 = 8
b= 3>3 = 27
c= 2>4 = 16

5xa+2xb-c
5x8+2x27-16
40+54-16
94-16=
= 78

Espero ter ajudado. :)

Answer 2

5a+2b-c
5.2³+2.3³-2^4
5.8+2.27-16
40+54-16=78