Question

$x^{2} -20x+100=0 ?$

Answer 1

Olá!!!

Resoluçao!!!

x² - 20x + 100 = 0

a = 1, b = - 20 , c = 100

∆ = b² - 4ac
∆ = ( - 20 )² - 4 • 1 • 100
∆ = 400 - 400
∆ = 0

x = - b/2a
x = - ( - 20 )/2 • 1
x = 20/2
x' = 10

x' = x" = 10 , S = { 10 }

Espero ter ajudado!!!