Question

(2,0 pontos) A soma das ra ́ızes das equa ̧c ̃oes 3x

2 − 5x − 2 = 0 e 5x − 2 = 2x − 1 ́e:

0
1
2
3

rapido pf

Answer 1

Resposta:

2 − 5x − 2 = 0

-5 = 0

-5x/-5 = 0/-5

0/-5

x = 0

5x − 2 = 2x − 1

5x -2 + 2 = 2x -1 + 2

5x = 2x -1 + 2

5x = 2x + 1

5x -2x = 2x + 1-2x

3x = 2x + 1-2x

3x = 1

3x/3 = 1/3

x = 1/3

1)