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Review: Value of Quadratic Expression
Explanation
In this question, we might be able to reformat the
equation on the left in order to obtain the equation on the right. If we
cross-multiply we obtain
Moving everything to one side:
This is not quite what we wanted, as we need 4 to be
positive, not negative. If we add 8 to both sides of the equation, we get
The left side is what we are asked for, and the right side
tells us what it is. The correct answer is (E).
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