Question

resolva : f (x) = 2x² - 3x + 1​

Answer 1

Resposta:

$a = 2 \: \: \: b = - 3 \: \: \: \: c = 1 \\ {b}^{2} - 4 \times a \times c \\ { - 3}^{2} - 4 \times 2 \times 1 \\ 9 - 8 = 1 \\ \sqrt{1} \\ \\ \frac{ - b + - \sqrt{delta} }{2a} \\ \frac{ - 3 + - \sqrt{1} }{4} \\ \\ {x}^{1} = \frac{ - 3 + 1}{4} \\ \\ {x}^{1} = \frac{- 2}{4} = \frac{ - 1}{2} \\ \\ {x}^{2} = \frac{ - 3 - 1}{4} \\ {x}^{2} = - 1 \\ \\ r = \frac{ - 1}{2} e - 1$