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Transcript
# Lesson 2: Solving Quadratic Equations by Extracting the Square Root - We can only use this method if the given quadratic equation is in the form *x² = C* - *x²* = Quadratic - *C* = Constant ## Example 1 - *x² - 16 = 0* - *x² = 16* - *x = ± 4* ## Example 2 - *y² = 81* - *y = ±...
# Lesson 2: Solving Quadratic Equations by Extracting the Square Root - We can only use this method if the given quadratic equation is in the form *x² = C* - *x²* = Quadratic - *C* = Constant ## Example 1 - *x² - 16 = 0* - *x² = 16* - *x = ± 4* ## Example 2 - *y² = 81* - *y = ± 9* ### Steps 1. *b² + a² = 0* - *√b² = ±√a²* 2. *m² = 1* - *√m² = ± √m* - *m = ±√m* 3. *(x - 4)² - 24 = 0* - *(x - 4)² = √24* - *(x - 4) = ± √25* - *x - 4 = ±5* - *x = 5 + 4* - *x = -5 + 4* - *x = 9* - *x = -1*
