Question

Calcular a raiz da equacao x2-6×+5=0

Answer 1

x^2-6×+5=0

a = 1; b = - 6; c = 5

∆ = b^2-4ac

∆ = (-6)^2 - 4.1.5

∆ = 36 - 20

∆ = 16

x = [ - b +/- √∆]/2a

x = [ -(-6) +/- √16]/2.1

x = [ 6 +/- 4]/2

x' = (6 + 4)/2 = 10/2 = 5

x" = (6 - 4)/2 = 2/2 = 1

Resp.: { 1 ; 5}