(a)
Tosolve:The given equation by factoring.
(a)
Answer to Problem 25WE
The solution of the equation is
Explanation of Solution
Given:
The equation is
Calculation:
The solution of the given equation is obtained by factoring.
The given equation can be written as
Find the factors of the equation.
Equate
Equate
Therefore, the solution of the given equation is
Therefore, the solution of the equation is
.
(b)
Tosolve:The given equation by
(b)
Answer to Problem 25WE
The solution of the equation is
Explanation of Solution
Given:
The equation is
Calculation:
The solution of the given equation is obtained by using the quadratic formula.
The given equation can be written as
For a quadratic equation in the form of
Comparing the given equation with the standard quadratic equation, the coefficients are:
Substituting these in the formula for the roots.
First take the positive sign.
Take the negative sign.
Therefore, the solution of the given radical equation is
Therefore, the solution of the equation is
.
Chapter 7 Solutions
Algebra and Trigonometry: Structure and Method, Book 2
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