Question

$x^{2} +12x+36=0$

Answer 1

x² + 12x + 36 = 0

a = 1; b = 12; c = 36

Δ = b² - 4ac
Δ = 12² - 4.1.36
Δ = 144 - 144
Δ = 0

x = - b +/- √Δ = - 12 +/- 0
          2a               2.1

x = - 12 = - 6
         2

R.:x = - 6