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Essay On Quadratic Equation

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SAMPLE LESSON PLANS (Control group) I. TOPIC:Solving Quadratic Equation by Factoring II. OBJECTIVES: At the end of the lesson, the students should be able to: 1. determine the steps in solving quadratic equations by factoring 2. find the solution set of quadratic equations given 3. participate actively during class discussion III. MATERIALS: Worksheets IV. REFERENCE: E-Math Grade 9 by Orlando A. Oronce and Marilyn O. Mendoza V. INSTRUCTIONAL TECHNIQUE AND STRATEGIES: Traditional Approach VI. LESSON PROPER: EXPLORE: - Classify the following expressions: x2– 2x + 1 x2 3x + 2 = 0 6x2 - 7x – 3 3x2 + 2x = 6 x2 + 8 = 6x 5x2 + 7x – 8 - How do you call the first set of expressions? second …show more content…

- What is quadratic equation? - What is the standard form of writing quadratic equation? Give examples. - What are the four ways in solving quadratic equation?  Factoring  Completing the …show more content…

x2 + 5x____ 5. x2- 8x____ - How will you classify the quadratic expressions x2+4x+4, x2 + 6x + 9, x2+2x+1, etc? - What do you mean by completing the square then? - Is x2+4x+4 the same as (x+2)2? Why or why not? FIRM-UP: - Suppose we have this equation x2 + 6x - 16 = 0 - What will you do to solve the equation using completing the square? - Consider the previous examples, what usually expressions do we have before we complete the square? What shall we do with the equation? - What do we add to both sides of the equation to form a perfect square trinomial on the left side of the equation? - After completing the square what shall we do? - What is the equation then? How will you solve the solution? - Suppose we have x2 - 3x = - 2 - Who will come in front and solve? Explain. Seatwork: Find the values of x given the following quadratic equations by completing the square. 1. x2- 2x – 8 = 0 2. x2 – 3x + 4 = 0 3. x2– 8x + 32 = 0 4. The product of two numbers is 36 and their quotient is 9. Find the numbers. 5. The area of a rectangular field is 96 square m. and its length is four meter longer than its width. Find the dimensions of the field.

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