Chapter A.4, Problem 39E

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6th Edition

Daniel C. Alexander + 1 other

ISBN: 9781285195698

Textbook Problem

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Find the length *a* by solving the equation

To determine

The length ‘

Explanation

**Approach:**

Solving an equation is to find the value of the unknown variables in the equation, such that the obtained value or values of the unknown should satisfy the equation from which it was derived. Such a value is said to be the solution for the equation. In general a quadratic equation has two solutions for the variable in the equation as the degree of the equation is two.

**Calculation:**

Given,

Apply the identity

Add;

Combine; the like terms.

Divide; each term of the above equation by 2 on both sides,

The above equation is in the standard form of a quadratic equation.

Now, we shall proceed with the factorization of the quadratic expression in the left of the equation.

First look for the common factor

Sect-A.1 P-1ESect-A.1 P-2ESect-A.1 P-3ESect-A.1 P-4ESect-A.1 P-5ESect-A.1 P-6ESect-A.1 P-7ESect-A.1 P-8ESect-A.1 P-9ESect-A.1 P-10E

Sect-A.1 P-11ESect-A.1 P-12ESect-A.1 P-13ESect-A.1 P-14ESect-A.1 P-15ESect-A.1 P-16ESect-A.1 P-17ESect-A.1 P-18ESect-A.1 P-19ESect-A.1 P-20ESect-A.1 P-21ESect-A.1 P-22ESect-A.1 P-23ESect-A.1 P-24ESect-A.1 P-25ESect-A.1 P-26ESect-A.1 P-27ESect-A.1 P-28ESect-A.1 P-29ESect-A.1 P-30ESect-A.1 P-31ESect-A.1 P-32ESect-A.2 P-1ESect-A.2 P-2ESect-A.2 P-3ESect-A.2 P-4ESect-A.2 P-5ESect-A.2 P-6ESect-A.2 P-7ESect-A.2 P-8ESect-A.2 P-9ESect-A.2 P-10ESect-A.2 P-11ESect-A.2 P-12ESect-A.2 P-13ESect-A.2 P-14ESect-A.2 P-15ESect-A.2 P-16ESect-A.2 P-17ESect-A.2 P-18ESect-A.2 P-19ESect-A.2 P-20ESect-A.2 P-21ESect-A.2 P-22ESect-A.2 P-23ESect-A.2 P-24ESect-A.2 P-25ESect-A.2 P-26ESect-A.2 P-27ESect-A.2 P-28ESect-A.2 P-29ESect-A.2 P-30ESect-A.2 P-31ESect-A.2 P-32ESect-A.2 P-33ESect-A.2 P-34ESect-A.2 P-35ESect-A.2 P-36ESect-A.3 P-1ESect-A.3 P-2ESect-A.3 P-3ESect-A.3 P-4ESect-A.3 P-5ESect-A.3 P-6ESect-A.3 P-7ESect-A.3 P-8ESect-A.3 P-9ESect-A.3 P-10ESect-A.3 P-11ESect-A.3 P-12ESect-A.3 P-13ESect-A.3 P-14ESect-A.3 P-15ESect-A.3 P-16ESect-A.3 P-17ESect-A.3 P-18ESect-A.3 P-19ESect-A.3 P-20ESect-A.3 P-21ESect-A.3 P-22ESect-A.3 P-23ESect-A.3 P-24ESect-A.3 P-25ESect-A.3 P-26ESect-A.3 P-27ESect-A.3 P-28ESect-A.3 P-29ESect-A.3 P-30ESect-A.3 P-31ESect-A.3 P-32ESect-A.4 P-1ESect-A.4 P-2ESect-A.4 P-3ESect-A.4 P-4ESect-A.4 P-5ESect-A.4 P-6ESect-A.4 P-7ESect-A.4 P-8ESect-A.4 P-9ESect-A.4 P-10ESect-A.4 P-11ESect-A.4 P-12ESect-A.4 P-13ESect-A.4 P-14ESect-A.4 P-15ESect-A.4 P-16ESect-A.4 P-17ESect-A.4 P-18ESect-A.4 P-19ESect-A.4 P-20ESect-A.4 P-21ESect-A.4 P-22ESect-A.4 P-23ESect-A.4 P-24ESect-A.4 P-25ESect-A.4 P-26ESect-A.4 P-27ESect-A.4 P-28ESect-A.4 P-29ESect-A.4 P-30ESect-A.4 P-31ESect-A.4 P-32ESect-A.4 P-33ESect-A.4 P-34ESect-A.4 P-35ESect-A.4 P-36ESect-A.4 P-37ESect-A.4 P-38ESect-A.4 P-39ESect-A.4 P-40ESect-A.4 P-41ESect-A.5 P-1ESect-A.5 P-2ESect-A.5 P-3ESect-A.5 P-4ESect-A.5 P-5ESect-A.5 P-6ESect-A.5 P-7ESect-A.5 P-8ESect-A.5 P-9ESect-A.5 P-10ESect-A.5 P-11ESect-A.5 P-12ESect-A.5 P-13ESect-A.5 P-14ESect-A.5 P-15ESect-A.5 P-16ESect-A.5 P-17ESect-A.5 P-18ESect-A.5 P-19ESect-A.5 P-20ESect-A.5 P-21ESect-A.5 P-22ESect-A.5 P-23ESect-A.5 P-24ESect-A.5 P-25ESect-A.5 P-26ESect-A.5 P-27ESect-A.5 P-28ESect-A.5 P-29ESect-A.5 P-30ESect-A.5 P-31ESect-A.5 P-32ESect-A.5 P-33ESect-A.5 P-34ESect-A.5 P-35ESect-A.5 P-36ESect-A.5 P-37ESect-A.5 P-38ESect-A.5 P-39E

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