Page 65 - Math Course 3 (Book 1)
P. 65
The Quadratic Formula
Skill Practice!
Solve each equation by using the Quadratic Formula. Round to the nearest tenth if necessary.
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2
1. u – 49 = 0 2. n – n – 20 = 0
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3. s – 5s – 36 = 0 4. b + 11b + 30 = 0
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2
2
5. c – 7c = –3 6. p + 4p = –1
State the value of the discriminant for each equation. Then determine the number of real roots of the
equation.
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7. q + 4q + 3 = 0 8. m + 2m + 1 = 0
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2
2
9. a – 4a + 10 = 0 10. w – 6w + 7 = 0
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