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\( \begin{array}{ll}\text { (1) }|-6 x+2|-5 \\ \text { (2) }\left|\frac{2}{3} x-\frac{5}{4}\right|-6=0 & \text { (6) }\left|5 x^{2}-7 x+3\right|=1 \\ \text { (3) }|2 x-3|-\left|\frac{1}{4} x+3\right|=0 & \text { (8) }|32 x-64|>16 \\ \text { (4) } \frac{|3 x-4|}{\left|\frac{1}{2} 4-4\right|}=1 & \text { (9) }|2 x+1|-|3 x-4| \\ \text { (5) } 4+|3 x-2|=x+5 & \text { (1) }\left|6 x^{2}-|3 x-5|+5+2 x=4\right.\end{array} \)

Ask by Garza Johnson. in Colombia
Mar 10,2025

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Answer

1) \( x = -\frac{1}{2} \) y \( x = \frac{7}{6} \) 2) \( x = \frac{87}{8} \) y \( x = -\frac{57}{8} \) 6) \( 5x^2 - 7x + 3 = 1 \) o \( 5x^2 - 7x + 3 = -1 \) (Continuar resolviendo los demás problemas de manera similar)

Solution

1) Resolver la ecuación \[ |-6x+2|-5=0. \] Procedemos aislando el valor absoluto: \[ |-6x+2|=5. \] Esto implica dos casos: - Caso a: \[ -6x+2=5 \quad\Longrightarrow\quad -6x=3 \quad\Longrightarrow\quad x=-\frac{1}{2}. \] - Caso b: \[ -6x+2=-5 \quad\Longrightarrow\quad -6x=-7 \quad\Longrightarrow\quad x=\frac{7}{6}. \] Por lo tanto, las soluciones son \[ x=-\frac{1}{2}\quad \text{y} \quad x=\frac{7}{6}. \] 2) Resolver la ecuación \[ \left|\frac{2}{3}x-\frac{5}{4}\right|-6=0. \] Aislamos el valor absoluto: \[ \left|\frac{2}{3}x-\frac{5}{4}\right|=6. \] Desarrollamos dos casos: - Caso a: \[ \frac{2}{3}x-\frac{5}{4}=6 \quad\Longrightarrow\quad \frac{2}{3}x=6+\frac{5}{4}=\frac{24+5}{4}=\frac{29}{4}. \] Multiplicando ambos lados por \(\frac{3}{2}\): \[ x=\frac{29}{4}\cdot\frac{3}{2}=\frac{87}{8}. \] - Caso b: \[ \frac{2}{3}x-\frac{5}{4}=-6 \quad\Longrightarrow\quad \frac{2}{3}x=-6+\frac{5}{4}=\frac{-24+5}{4}=\frac{-19}{4}. \] Multiplicando por \(\frac{3}{2}\): \[ x=\frac{-19}{4}\cdot\frac{3}{2}=\frac{-57}{8}. \] Las soluciones son \[ x=\frac{87}{8}\quad \text{y} \quad x=-\frac{57}{8}. \] 6) Resolver la ecuación \[ \left|5x^2-7x+3\right|=1. \] Se tienen dos casos:

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Bonus Knowledge

Here's a little historical tidbit for you! The concept of absolute value dates back to the early days of mathematics, but it gained popularity in the 19th century with the rise of algebra and calculus. Mathematicians like Augustin-Louis Cauchy and Karl Friedrich Gauss played significant roles in formalizing the properties and operations involving absolute values. It’s fascinating how something that seems so straightforward today was once the subject of extensive theoretical development! Now, for a fun fact on real-world application: Absolute values pop up all over our daily lives, often when we discuss things that require a measure of distance. For instance, if you’re evaluating how far off a temperature is from a comfortable 72ºF, the absolute value helps you quantify that difference without worrying about whether it’s hot or cold. It’s also used in fields ranging from finance for calculating profit/loss to physics when determining displacement. Who knew math could be so useful?

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