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Math 90 Chapter 9 Practice Problems

Solve by any method:

1. x2 + 5x + 6 = 0

2. x2 – 12x – 28 = 0

3. Find the solutions by factoring : 9x2 = 5x

4. Solve for y : (y + 1)(y – 2) = 4
Hint Foil 1st

5. Solve the quadratic equat6ion 6x2 = 30 by Square Root Method.

6. Add a constant to the expression x2 – 3x + ? to make it a perfect square trinomial.

7. Solve x 2 – 6x + 4 = 0 by completing the square.

8. Solve the equation 18x2 + 12x + 2 = 0 by the Quadratic Formula.

9. Find two consecutive negative odd integers whose product is 143. Write an equation and
use the Quadratic Formula.

Answers

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