Question

Se A = 10 + 10² e B = 10 - 10², o valor de A + B é:
a)20
b)40
c)- 20
d)200

Answer 1

R: a) 20

A = 10 + 10²

A = 10 + 100

A = 110

B = 10 - 10²

B = 10 - 100

B = -90

110 + (-90) = 110 - 90 = 20