Respuesta :

wolf1728
x^2 + 3x  - 10 = 0
a=1  b=3  c= -10
Solving by the quadratic formula:
x = -3 +- sq root (3*3 -4*1*-10) / 2*1
x = -3 +- sq root (9 +40) /2

x1= (-3 +7 )/ 2 = 2
x2 = (-3 -7)/ 2 = -5