Question

Determine as raizes: x² – 16x + 64 = 0


A) x’ = 8; x” = –8

B) x’ = 4; x” = –16

C) x’ = –8; x” = –8

D) x = ∄

Answer 1

Explicação passo-a-passo:

x² - 16x + 64=0

∆= (-16)² - 4.1.64

∆= 256 - 256

∆= 0

x= - (-16)/2.1

x= +16/2

x= 8

S= { 8}