Explanation Definition used: Standard quadratic equation : “An equation in which the variable appears to the second power, but to no higher power, is called a quadratic equation. A standard quadratic equation can be expresses as, a x 2 ︸ + b x ︸ + c ︸ = 0 ↓ ↓ ↓ [ x 2 -term ] [ x -term ] [ Constant term ] That is every quadratic equation must have x 2 -term, but the x -term or constant tem may be missing.” Procedure used: 1. Identify the values of a , b and c by comparing the given equation with the standard quadratic equation a x 2 + b x + c = 0 . 2. Substitute the values of a , b and c into the quadratic equation formula x = − b ± b 2 − 4 a c 2 a . 3. Simplify the equation for x . 4. Check the solution by back substituting the values of x in the original equation. Calculation: The given quadratic equation is 15 x = 12 − x 2 . The above equation can be written in standard form as x 2 + 15 x − 12 = 0 . Step 1 : Identify the values of a , b and c by comparing the given equation with the standard quadratic equation a x 2 + b x + c = 0

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ISBN: 9780134758817

Author: SAUNDERS

Publisher: PEARSON CO

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Chapter 11.2, Problem 7BE

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To solve: The equation 15x=12−x2.

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Chapter 11.2, Problem 6BE

Chapter 11.2, Problem 8BE

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Chapter 11 Solutions

EP MATHEMATICS FOR THE TRADES

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The equation 15 x = 12 − x 2 .

Solution Summary: The author explains how to solve the given quadratic equation: 15x=12-x2.

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To solve: The equation 15x=12−x2.

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Chapter 11 Solutions