Question

5(x - 8). (x+14) = 0?​

Answer 1

Resposta:

S = { -14 , 8 }

Explicação passo-a-passo:

5(x - 8). (x+14) = 0

(5x - 40)(x+14) = 0

5x^2 + 30x -560 = 0

Δ = 110

x' = (-30 + 110) / 10 = 8

x'' = (-30 - 110) / 10 = -14

Answer 2

$\mathtt{5(x - 8)(x + 14) = 0} \\\mathtt{(x - 8)(x + 14) = 0} \\\mathtt{x- 8=0} \\ \mathtt{x =8}$

$\mathtt{x + 14 = 0} \\\mathtt{x= - 14}$