Question

x (x-6)=8+0 resolva essa questão.

Answer 1

x (x - 6) + 8 = 0
x² - 6x + 8 = 0

a = 1; b = -6; c = 8

Delta:
Δ = b² - 4ac
Δ = (-6)² - 4 * 1 * 8
Δ = 36 - 32
Δ = 4
Bhaskara:
x = - b ± √Δ / 2a
x = - (-6) ± √4 / 2 * 1
x = 6 ± 2 / 2
x' = 6 - 2 / 2 = 4 / 2 = 2
x'' = 6 + 2 / 2 = 8 / 2 = 4