Question

f(x)= -3x²+6x+9 exercicio resolvido positivo? heeelllpppp :)

Answer 1

$\frac{-6+- \sqrt{6^2-4*(-3)*9} }{2*(-3)} = \frac{-6+- \sqrt{144} }{-6} = \frac{-6+-12}{-6}$
x1= 6/-6= -1
x2= -18/-6= 3