Warm Up 5-7.

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Solving Quadratic Equations by Completing the Square

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Presentation transcript:

Warm Up 5-7

5-7 Completing the Square ET: When looking at standard form of a quadratic equation, how can you determine if completing the square is a good option?

Recall: Steps to completing the square: If a 1, divide everything by a Isolate constant term Add to both sides (do not square) Rewrite left side as Simplify right side Take the square root of both sides (don’t forget on right) Isolate x (will have 2 equations)

Example 1 Finding c to Complete the Square Find the missing value to complete the square.

Example 2 Solving When Not a Perfect Square Solve x2 + 4x + 3 = 0.

Example 3 Completing the Square when a 1 Solve 2x2 = -16x +18 .