Question

Aplique a fórmula de Bhaskara
a)3x²+5x+2=0
B) 3x²+x-4=0

Answer 1

Joaonascente,

a) 3x² + 5x + 2 = 0
a = 3
b = 5
c = 2

Δ = 5² - 4.3.2
Δ = 25 - 24
Δ = 1

x = -5 +- 1 / 2.3
x = -5 +- 1 / 6
x' = -5+1/6 = -4/6 = -2/3
x'' = -5-1/6 = -6/6 = -1

S = {-2/3, -1}

b) 3x² + x - 4 = 0
a = 3
b = 4
c = -4

Δ = 4² - 4.3.(-4)
Δ = 16 + 48
Δ = 64

x = -1 +- 8 / 2.3
x = -1 +- 8 / 6
x' = -1-8/6 = -9/6 = -3/2
x'' = -1+8/6 = 7/6

S = {-3/2, 7/6}