Question

quais sao as raizes da equaçao
${ \times }^{2} + 10 \times + 16 = 0$
?​

Answer 1

Explicação passo-a-passo:

x² + 10x + 16 = 0 a= 1 b= 10 c= 16

∆= b² - 4ac

∆= 10² - 4.1.16

∆= 100 - 64

∆= 36

-b ± √∆ = -10 ± √36

/2 /2

x1 = -10 + 6 = -4 = -2

-10 ± 6 = /2

/2

x2 = -10 - 6 = -16 = -8

/2