Question

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Answer 1

oi , é só colocar igual a zero

3x + 1 = 0

3x = -1

x = - 1 / 3

R : A

2x - 4 =0

2x = 4

x = 2

R : B

- 3x + 1 = 0

-3x = - 1

x = - 1 / - 3

x = 1 / 3

R : A

2x = 0

x = 0/2

x = 0

R : A