(x)\). To find an inverse function, form an equation by giving the output value a name using a letter (such as \(y\)), then rearrange the equation to make \(x\) the subject.
Some quadratics cannot be factorised. An alternative method to solve a quadratic equation is to complete the square. To solve an equation of the form \(x^2 + bx + c = 0\) consider the expression ...
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