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Solving a Quadratic Equation by Completion of Squares Method

Solve: 7 = ...

Question

Solve: $7 = 4 x - 9$

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Solution

$7 = 4 x - 9$
$\Rightarrow 4 x = 7 + 9$
$\Rightarrow 4 x = 16$
$\Rightarrow x = 4$

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