a = 1
b = 2
c = -5
x = -b ± √b² - 4ac / 2a
x = -2 ± √2² - 4 (1) (-5) / 2(1)
x = -2 ± √4 - (-20) / 2
x = -2 ± √24 /2
x = -2 + 4.898/2 = 0.449
x = -2 - 4.898/2 = -4.449
Espero haberte ayudado. Suerte en los estudios ≧◠◡◠≦.
