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Quadratic Polynomials by: Kameron Falls. what is a quadratic polynomial A quadratic polynomail is a polynomial of degree 2. A univariate quadratic polynomial.

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Presentation on theme: "Quadratic Polynomials by: Kameron Falls. what is a quadratic polynomial A quadratic polynomail is a polynomial of degree 2. A univariate quadratic polynomial."— Presentation transcript:

1 Quadratic Polynomials by: Kameron Falls

2 what is a quadratic polynomial A quadratic polynomail is a polynomial of degree 2. A univariate quadratic polynomial has the form. An equation involving a quadratic polynomial is called a quadratic equation. A closed-form solution known as the quadratic formula exists for the solutions of an arbitrary quadratic equation.

3 Here are examples of quadratic equations in the standard form (ax² + bx + c = 0): 6x² + 11x – 35 = 0 2x² – 4x – 2 = 0 -4x² – 7x +12 = 0

4 Here are examples of quadratic equations lacking the linear coefficient or the “bx”: 2x² – 64 = 0 x² – 16 = 0 9x² + 49 = 0

5 Here are examples of quadratic equations lacking the constant term or “c”: x² – 7x = 0 2x² + 8 -x² – 9x = 0

6 Here are examples of quadratic equation in factored form (x + 2)(x – 3) = 0 [upon computing becomes x² -1x – 6 = 0] (x + 1)(x + 6) = 0 [upon computing becomes x² + 7x + 6 = 0] (x – 6)(x + 1) = 0 [upon computing becomes x² – 5x – 6 = 0]

7 pictures of quadratic function

8 synthetic division Synthetic division is a shorthand, or shortcut, method of polynomial division in the special case of dividing by a linear factor. Synthetic division is generally used, however, not for dividing out factors but for finding zeroes (or roots) of polynomials.

9 synthetic division If you are given, say, the polynomial equation y =x 2 + 5x + 6, you can factor the polynomial as y = (x + 3)(x + 2). Then you can find the zeroes of y by setting each factor equal to zero and solving. You will find that x = –2 and x = –3 are the two zeroes of y.

10 synthetic division example

11 websites cited http://examples.yourdictionary.com/examples-of-quadratic- equation.html http://www.purplemath.com/modules/synthdiv.htm


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