Question

Dos números que multiplicados den -18 y sumados den -1?

Answer 1

x²-x-18=
$\frac{-(-1) \frac{+}{-} \sqrt{(-1^{2})-4(-18)(1) } }{2(1)[tex] \frac{1 \frac{+}{-} = \sqrt{1+72} }{2}$} [/tex]=
$\frac{1 \frac{+}{-} \sqrt{73} }{2}$=
$\frac{1+8.544}{2}$ = $\frac{9.544}{2}$ = 4.772
$\frac{1-8.544}{2}$ = $\frac{7.544}{2}$ =3.772

-4.772*3.772= -18
3.772-4.772=-1