Question

questão de 2.° grau
resolver
x ao quadrado +2x +1=0​

Answer 1

x² + 2x + 1 = 0

A= 1

B= 2

C= 1

∆= b² - 4ac

∆= 2² - 4 • 1 • 1

∆= 4 - 4

∆= 0

x= - b ± √∆ /2a

x= - 2 ± √0 / 2 • 1

x= - 2 ± 0/2

x'= - 2 + 0/2 = - 2/2 = -1

x''= - 2 - 0/2 = - 2/2 = - 1

S= ( - 1)