411 REFERENCE · Wikibooks
Basic Algebra/Solving Quadratic Equations/Solving Quadratic Equations By Taking The Square Root of Both Sides
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Vocabulary
Lesson
One way to solve a quadratic is to use square root. Steps:
Factor a quadratic so that it is in the form ( can be determined by completing the square)
Take the square root of both sides, so
If y is 0, the square root is zero. In this case, there will only be one solution instead of two.
Solve for x
Example problems
Problem 1
Problem 2