Question

4) Resolver as seguintes equações A)X²-9x-18=0 B)4x²+8x+4=0​

Answer 1

Resposta:

$a)x^2-9x-18=0\quad :\quad x=\frac{9+3\sqrt{17}}{2},\:x=\frac{9-3\sqrt{17}}{2}$

$b)4x^2+8x+4=0\quad :\quad x=-1$