Question

$x { }^{2} - 27x + 180$=0

Answer 1

Vamos lá

X² - 27X + 180 = 0

Os coeficientes:

A = 1 ; B = - 27 ; C = 180

delta:

Δ = b² - 4 • a • c

Δ = ( - 27 )² - 4 • 1 • 180

Δ = 729 - 720

Δ = 9

Calculando as raízes:

X = - b ± √ Δ / 2 • a

X = 27 ± √ 9 / 2 • 1

X = 27 ± 3 / 2

X1 = 27 + 3 / 2 = 30 / 2 = 15

X2 = 27 - 3 / 2 = 24 / 2 = 12

RESPOSTA:

S ( 15 , 12 )