
Concept explainers
(a)
To find: The value of discriminant.
(a)

Answer to Problem 19PT
The value of discriminant is
Explanation of Solution
Given information:
The given equation is
Calculation:
Consider the equation
The value of discriminant
Therefore, the value of discriminant is
(b)
To find: The number type of roots.
(b)

Answer to Problem 19PT
The two roots are real and rational number .
Explanation of Solution
Given information:
Calculation:
Calculate the number of type roots.
The discriminant obtained in part
Therefore, the two roots are real and rational number.
(c)
To find: The exact solution of
(c)

Answer to Problem 19PT
The exact value of quadratic equation is
Explanation of Solution
Given information:
The given information is
Calculation:
The exact solution is found below by using
The roots are
Therefore the exact value of quadratic equation is
Chapter 5 Solutions
Algebra 2
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