Question

2. Resolva:
a) x2 - 49 = 0
b) x2 - 9 = 0
c) X – 1 = 0
d) 2x - 32 = 0
e) 2x2 – 18 = 0​

Answer 1

A) X² - 49 = 0

X² = 0+49

X² = 49

X = √49

X = 7

B) X² - 9 = 0

X² = 0 + 9

X² = 9

X = √9

X = 3

C) X - 1 = 0

X = 0 + 1

X = 1

D) 2X - 32 = 0

2X = 0 + 32

2X = 32

X = 32/2

X = 16

E) 2X² - 18 = 0

2X² = 0 + 18

2X² = 18

X² = 18 / 2

X² = 9

X = √9

X = 3

Espero ter ajudado!