Respuesta :

wolf1728
a=1  b=-7  c=-8
Using the quadratic formula:
x = --7 +-sq root(49 -4*1*-8)/2*1
x = 7 +-sq root(49 +32)/2
x1 = (7 + 9) / 2 = 8
x2 = (7 - 9) / 2 = -1

answers (8,-1)