Hey, I haven't done maths for many years, and i'm just wondering how x could be made the subject of this equation: x = 8 - 15/x Thanks EDIT lmao sorry not x the subject how could you solve this to get a value of x?
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Originally Posted by mark17188 Hey, I haven't done maths for many years, and i'm just wondering how x could be made the subject of this equation: x = 8 - 15/x Thanks EDIT lmao sorry not x the subject how could you solve this to get a value of x? multiply every term in the equation by x and solve the resulting quadratic equation ... $\displaystyle x^2 = 8x - 15$ $\displaystyle x^2 - 8x + 15 = 0$ $\displaystyle (x - 3)(x - 5) = 0$ $\displaystyle x = 3$ , $\displaystyle x = 5$
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