
To solve: the given equation. If exact roots cannot be found, state the consecutive integers between which the roots are located.

Answer to Problem 24PPS
x=9 .
Explanation of Solution
Given:
The given equation is x2−18x=−81 .
Calculation:
The given equation is expressed as x2−18x+81=0 .
Now, solve the given equation by factor method. Therefore,
x2−18x+81=0 {given function}x2−9x−9x−81=0 {arrange thefactor}x(x−9)−9(x−9)=0 {arrange thefactor}(x−9)(x−9)=0 {factor}
Therefore, (x−9)=0 ⇒x=9
Thus, the zeros of the function are x=9,x=9 .
Hence, the solution of the given equation is x=9 .
Chapter 4 Solutions
Glencoe Algebra 2 Student Edition C2014
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