Question

Calcule 2x² + 100 = 300

A)+/-11
B) +/-200
C) +/-9
D) +/-8
E) +/-10​

Answer 1

Resposta:

E) +/-10

2x² + 100= 300

2x²= 300-100

2x²= 200

x²= 200/2

x²= 100

x= √100

x= 10