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Another method rewrites a quadratic as a perfect square trinomial before solving. That method is:
AComparing the slopes
BCounting the roots
CCompleting the square
DCancelling the constant
Answer & Solution
Correct answer: C. Completing the square
1. A perfect square is built deliberately.
2. Then the square root property finishes it.
3. It is completing the square.
_Source: OpenStax College Algebra 2e, Chapter 2, Equations and Inequalities._
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