Q.E

1. 6 + 6 – 6 = 6
0 0 0 = 6
4 4 4 = 6
9 9 9 = 6

2. Quadratic equation using factoring

3. Quadratic equation is second
degree equation that comes in
standard form:
ax² + bx + c = 0.

4. Examples:
2x² = 5x + 4
x² + 5 = 0
x( x + 2 ) – 10 = 0
x² + 4x = -8
•

5. Solve for the roots of the quadratic equation:
x² - 4x – 45 = 0
• Usual listing of factors of the constant that will
satisfy the coefficient of the middle term.
• Equate each factor to 0; then solve for the values of
x.
• Then, transpose the constant to the right.

6. Find the roots of the following:
•x² + 4x + 4 = 0
•x² + 7x + 12 = 0
•x² + 8x – 9 = 0

7. Solve the following Quadratic Equation using
factoring:
1. x² - 4x – 5 = 0
2. x² + 9x + 18 = 0
3. x² + 12x + 35 = 0

8. Assignment:
•Define quadratic formula.
•What are the steps in solving quadratic formula.
Reference:
Conceptual Math & Beyond II Intermediate Algebra pages 61-63.