Question

$encontre as raizes de cada equacao do 2 grau a seguir$
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Answer 1

Resposta:

Vamos lá!

$3x^{2} -12x=0$

Δ $= b^{2} -4ac$

Δ $=(-12)^{2} -4.3.0$

Δ $=144$

x = -[b ± √Δ] / 2a

x = -[- 12 ± √144] / 2 . 3

x = [12 ± 12] / 6

x' = 24/6 = 4

x'' = 0/6 = 0