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Answers

Completing the square

Exercise 1

1. (x + 2)² - 4

2. (x + 5)² - 25

3. (x - 2)² - 4

4. (x + 1)² - 1

5. (x + 3)² - 9

6. (x + 7)² - 49

7. (x - 3)² - 9

8. (x + 10)² - 100

9. (x + 8)² - 64

10.(x + 6)² - 36

Exercise 3

1. x = -4 ± √19

2. x = -3 ± √4

3. x = -2 ± √11

4. x = 2.5 ± √11.25

5. x = -7 ± √50

6. x = -5 ± √32

7. x = 6 ± √39

8. x = -1 ± √6

9. x = -8 ± √67

10.x = 10 ± √103


Exercise 1

1. (x + 2)² - 3

2. (x + 5)² - 30

3. (x - 2)² - 1

4. (x + 4)² - 9

5. (x + 1)² - 7

6. (x + 7)² - 55

7. (x - 3)² - 13

8. (x + 10)² - 95

9. (x + 9)² - 89

10.(x + 6)² - 47

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