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| PAGE: 365 | SET: Exercises | PROBLEM: 60 |
The equation is 
.
The equation have exactly three solutions. (From fundamental theorem)
The equation can be written as 
.
Special factors : 
.
Apply zero product property.
Use quadratic formula to solve 
.
Quadratic formula : 
.
Compare the equation : 
with standard form of quadratic equation 
.
The three solutions are 
.
The solutions are plotted as an absolute value of 5 :
The three solutions are 
, and
The graph is :
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