Question

ME AJUDEM É PRA HOJE!
-X^2+6X-6=0

Answer 1

Resposta:

- X² + 6X - 6 = 0

a = -1

b = 6

c = -6

Δ = b² - 4 . a . c

Δ = 6² - 4 . ( -1 ) . ( -6 )

Δ = 36 - 24

Δ = 12

x = $\frac{-b +- \sqrt{\delta} }{2a} \\\\x= \frac{- 6 +- \sqrt{12} }{2 . (-1)} \\\\x = \frac{-6 +- \sqrt{12} }{-2} \\\\x^{'} = \frac{-6 + \sqrt{12} }{-2} \\\\x^{'} = 3 + \sqrt{12}\\\\x' = 3 + 2\sqrt{3} \\\\x^{''} = \frac{-6 - \sqrt{12} }{-2} \\\\x^{''} = 3 - \sqrt{12}\\\\x'' = 3 -2\sqrt{3}$