Question

2xelevado a 2 +7x=0​

Answer 1

Resposta:

S = {0; - 7/2}

Explicação passo-a-passo:

2x² + 7x = 0

x(2x + 7) = 0

x' = 0

2x + 7 = 0

2x = - 7

x" = - 7/2

S = {0; - 7/2}

Bons estudos.

Answer 2

$2 {x}^{2} + 7x = 0 \\ x(2x + 7) = 0 \\ x = 0 \\ 2x + 7 = 0 \\ 2x = - 7 \\ x = - \frac{7}{2}$

S={-7/2,0}