ACTIVITY 3: Identify the values of a, b, and c in each of the following equations.
1. x ^ 2 + 2x - 20 = 3x + 5
2. x ^ 2 - 4x - 21 = 0
3. x ^ 2 - x = 72
4. 2x ^ 2 = 8x
5. x ^ 2 + 5x + 6 = 0
1. x ^ 2 + 2x - 20 = 3x + 5
2. x ^ 2 - 4x - 21 = 0
3. x ^ 2 - x = 72
4. 2x ^ 2 = 8x
5. x ^ 2 + 5x + 6 = 0
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Answer:
1. x² + 5x + 6 = 0
a = 1 , b = 5 , c = 6
2. x² - 4x - 21 = 0
a = 1 , b = -4 , c = -21
3. x² - x = 72
x² - x - 72 = 0
a = 1 , b = -1 , c = -72
4. 2x² = 8x
2x² - 8x = 0
a = 2 , b = -8 , c = 0
5. x² + 3x - 20 = 3x + 5
x² + 3x - 3x - 20 - 5 = 0
x² - 25 = 0
a = 1 , b = 0 , c = -25