Question

Equação de 2 grau...................... B:) 2(x²+3x)-x+1=0

Answer 1

2 (x² + 3x) - x + 1 = 0
2x² + 6x - x + 1 = 0
2x² + 5x + 1 = 0
a = 2, b = 5, c = 1

Δ = b² - 4ac
Δ = 5² - 4 . 2 . 1
Δ = 25 - 8
Δ = 17

x = (- b ± √Δ)/2a
x = (- 5 ± √17)/2 . 2
x = (- 5 ± √17)/4

x' = (- 5 + √17)/4

x'' = (- 5 - √17)/4