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## 9.6 Solving Quadratic Equations Using the Quadratic Formula

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**9.6 Solving Quadratic Equations Using the Quadratic Formula**Everything must be on the same side of the equals sign before solving.**You must memorize this formula!**Time to sing along!!**Pop Goes the Weasel**X equals neg-a-tive b Plus or minus the square root B squared minus 4 A C ALL over 2 A**The Flintstones**Negative B Plus or mi-nus Square root B squared minus 4 A C A – L – L, over 2 A That’s the quadratic form-u-lee.**1st**2nd Ex: 1 Solve x2+ 9x +14 = 0 a = 1 b = 9 c =14**Ex: 2 Solve x2 +x = 1**a = 1 b = 1 c = -1**Ex: 3 Solve 2x2 – 7x +5 = 0**a = 2 b = -7 c = 5**Ex: 4 Solve x2 + 6x – 3 = 0**a = 1 b = 6 c = -3