Question

ayuda!!! Ecuación Cuadrática para resolver!!!!!!! URGENTE!!!!!

Answer 1

15x² + 2x - 1 = 0

x = {-2+-√(2²-(4*15*-1))} / 2*15
x = {-2+-√(4+60)} / 30
x = {-2+-√64} / 30
x = {-2+-8} / 30
x₁ = {-2-8} / 30 = -10/30 = -1/3
x₂ = {-2+8} / 30 = 6/30 = 1/5

Comprobación:
15(-1/3)² + (2*-1/3) - 1 = 0
15/9 - 2/3 -1 = 0
5/3 - 5/3 = 0

15(1/5)² + (2*1/5) - 1 = 0
15/25 + 2/5 - 1 = 0
3/5 + 2/5 - 5/5 = 0

Respuesta:
x₁ = -1/3
x₂ = 1/5