Question

FORMULA DE BASKARA
Quais são as raizes dessa equação?
X ao QUADRADO - X - 6=0?

Answer 1

x² - x - 6 = 0

Δ=b²-4*a*c

Δ=1²- 4*1*-6
Δ= 1 + 24
Δ= 25

x= -b+- √¯ Δ/2

x= 1+-√¯25/2

x= 1+-5/2

x'=6/2= 3

x''= 4/2= 2

X'= 3 e X''= 2

Answer 2

x²-x-6 = 0
a = 1
b = -1
c = -6

Δ = b²-4·a·c
Δ = (-1)²-4·1·(-6)
Δ = 1+24
Δ = 25

x = -b +ou-√Δ/2·a
x = -(-1)+ou-√25/2·1
x = 1+ou-5/2

x' = 1+5/2
x' = 6/2
x' = 3

x" = 1-5/2
x" = -4/2
x" = -2

S = {-2,3}