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1. |
Solve x2 – 8x + 16 = 13 by taking the square root of each side. |
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A. |
-4 |
B. |
4 |
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C. |
2 |
D. |
-2 |
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Hint |
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2. |
Solve x2 – 12x + 34 = 0 by taking the square root of each side. |
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A. |
 |
B. |
{5, 7} |
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C. |
{6} |
D. |
 |
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Hint |
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3. |
Solve 0.25x2 – 7x – 15 = 0. |
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A. |
{–5, 3} |
B. |
{3, 15} |
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C. |
{4, 30} |
D. |
{–2, 30} |
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Hint |
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4. |
When using a quadratic equation of the form ax2 + bx + c = 0 to find distances, what should always be ignored? |
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A. |
any solution if a is negative |
B. |
any positive solution |
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C. |
any solution if  is negative |
D. |
any negative solution |
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Hint |
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5. |
Solve x2 – 16x – 17 = 0 by completing the square. |
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A. |
{–1, 13} |
B. |
{1, 13} |
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C. |
{–1, 17} |
D. |
{1, 17} |
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Hint |
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