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Los op vir \( x \) : \( \begin{array}{ll}\text { (1) } x+1=b(b-x) & \text { (2) } \frac{x^{2}}{c^{2}}=b^{2} \\ \text { (3) } 4 a x-4 b x=a^{2}-2 a b+b^{2} & \text { (4) } x^{2}+3 b x-10 b^{2}=0 \\ \text { (5) } \frac{x}{a}-3=5-\frac{x}{b} & \text { (6) } \frac{x+a}{x-b}=\frac{c}{3} \\ \text { (7) } \frac{a}{x-1}=\frac{b}{x+2} & \text { (8) } \frac{2 x}{x+a}=\frac{b}{x-1}+2\end{array} \)

Ask by Harrington Mullins. in South Africa
Mar 13,2025

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Here are the solutions for \( x \) from each equation: 1. \( x = b - 1 \) 2. \( x = bc \) or \( x = -bc \) 3. \( x = \frac{a - b}{4} \) 4. \( x = -5b \) or \( x = 2b \) 5. \( x = \frac{8ab}{a + b} \) 6. \( x = -\frac{3a + bc}{3 - c} \) 7. \( x = -\frac{2a + b}{a - b} \) 8. \( x = \frac{-ab + 2a}{b + 2a} \)

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Mind Expander

Om te begin, laat ons die eerste vergelyking optel! 1. Van \( x + 1 = b(b - x) \) kan ons dit hervorm: stel alles aan een kant en herverdeel dit om \( x \) te ontsyfer. Dit gee ons \( x + b(b - x) - 1 = 0 \), wat ons lei tot 'n kwadratiese vorm van \( x \). 2. Watter interessante uitdaging! In (4) het ons 'n kwadratiese vergelyking: \( x^{2} + 3bx - 10b^{2} = 0 \). Ons kan die kwadratiese formule toepas, \( x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \), waar ons die koëffisiënte aanpas volgens die spesifieke vergelyking om die waarde van \( x \) te kry. Nou is jy reg om jou wiskundige ontdekkingsreis op hierdie uitdagings voort te sit!

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