Question

Ajudem aqui namoral nunca lhes pedi nada. ;3

Sendo x= 4,123.10^14 e y= 4,012.10^15
Calcule x+y e x-y

Answer 1

x = 4,123 × 10^14 = 0,4123 × 10^15
y = 4,012 × 10^15

x + y = (0,4123 + 4,012) × 10^15
x + y = 4,4243 × 10^15

x - y = (0,4123 - 4,012) × 10^15
x - y = -3,5997 × 10^15