solve the quadratic equation by factoring

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We must then factor to find the solutions for x. Think of the equation in this format to help with the following explanation. We then notice that all four numbers are divisible by four, so we can simplify the expression to. To do this we subtract 128 from both sides to get. This is a factoring problem, so we need to get all of the variables on one side and set the equation equal to zero.

Solve the quadratic equation by factoring