Question

x² + x-12= 0 preciso do cálculo

Answer 1

Olá!!!

Resoluçao!!!

x² + x - 12 = 0

a = 1, b = 1, c = - 12

∆ = b² - 4ac
∆ = 1² - 4 • 1 • ( - 12 )
∆ = 1 + 48
∆ = 49

x = - b ± √∆ / 2a
x = - 1 ± √49 / 2 • 1
x = - 1 ± 7 / 2
x' = - 1 + 7 / 2 = 6/2 = 3
x" = - 1 - 7 / 2 = - 8/2 = - 4

S = { - 4, 3 }

Espero ter ajudado!,

Answer 2

️= b^2 -4ac
b=1
a=1
c= -12
️= 1^2 -4.1.-12
️= 1 + 48
️=49
X= -b +/- _/️ /2a
X=-1 +/- 7 /2
X=-8/2 = -4
X=6/2=3