8. Resolución de ecuaciones

(a) $x + 5 = 14 - \frac{1}{2} x \Rightarrow x = 6$
(b) $\frac{2 x}{x + 1} = \frac{2 x - 1}{x} \Rightarrow x = 1$
(c) $x^{2} - x - 12 = 0 \Rightarrow x = - 3, 4$
(d) $2 x^{2} + 4 x + 1 = 0 \Rightarrow x = - 1 \pm \frac{1}{2} \sqrt{2}$
(e) $x^{4} - 3 x^{2} + 2 = 0 \Rightarrow x = \pm 1, \pm \sqrt{2}$
(f) $3 ∣ x - 4 ∣ = 10 \Rightarrow x = \frac{2}{3}, \frac{22}{3}$
(g) $2 x (4 - x)^{- 1 / 2} - 3 \sqrt{4 - x} = 0 \Rightarrow x = \frac{12}{13}$

TAREA DE PRECALCULO