Activity 2: Transform the following quadratic equations into its standard form ax2 + bx + c = 0 and determine the values of a, b, and c. (2 points each) Example: 3x - 2x2 = 7 Answer: -2x2 + 3x - 7= 0; a = -2, b = 3, C = -7 1. 2r(r - 2) = 8 2. 12 + 5x2 = -6x 3. (x + 3)(x + 3) = 0 4. (5 + 2x)2 = 4 Activity 3: Represent each situation with a mathematical sentence and determine whether each situation
Answers & Comments
Step-by-step explanation:
1) 2r(r - 2) = 8
2r^2 - 4r -8 = 0; a=2, b= -4, c= -8
2) 12+5x^2 = -6x
5x^2 +6x +12 = 0; a=5, b=6, c=12
3) (x+3)(x+3) =0
x^2 +6x +9 = 0; a=1, b=6, c=9
4) (5+2x)^2 = 4
4x^2 +20x +21= 0; a=4, b=20, c=21
Answer:
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