Completing The Square Answers
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1
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A student says that if 5x2 = 20, then x must be equal to 2. Do you agree or disagree with the student? Justify your answer.
Answer:
Disagree. Dividing both sides by 5 gives x² = 4. By the square root property, x = 2 or x = -2. Therefore, x could also be -2.
2
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Given (x – 1)2 = 50, select the values of x.
A
x = –49B
x = 51C
Option
D
Option
3
The solution to 3x2 – 12x + 24 = 0 is 7 or –7✔ 2 + 2i or 2 – 2i12 or –2.
A
7 or –7B
✔ 2 + 2i or 2 – 2iC
12 or –2Did you find these answers helpful?
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