Concept explainers
a)
To evaluate: the solutions of
a)
Answer to Problem 4P
The solution of above system of equations is (3, 8) and (−1, 4).
Explanation of Solution
Given:
Using the quadratic formula,
From the equation,
finding the value of a , b and c ,
Using quadratic formula to solve above
So, the given equation has two solutions.
b)
To evaluate: the number of real solutions of the equation
b)
Answer to Problem 4P
There will be two real number solutions.
Explanation of Solution
Given:
Using the discriminant formula,
From the equation,
a = a ,
b = b ,
c = − c ,
Using quadratic formula to solve above quadratic equation,
It can be seen that the value of discriminant is greater than or equal to zero.
It is known that when the value of discriminant is greater than or equal to zero, then quadratic equation will have two real-number solutions.
Chapter 9 Solutions
High School Math 2015 Common Core Algebra 1 Student Edition Grade 8/9
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