The function is .
Consider .
Substitute .
Subtract 1 from each side.
\ \
Divide each side by 5.
.
The real value of .
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.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0a7379bb1ab5906ff5f9d084cbb23772.png\")
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.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
.