![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The expression is n2.
\Substitute n = 7 in the expression.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3159122ce32d31bf37edbca50c5a00de.png\")
(Substitute n = 7)
Base is 7 and exponent is 2.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=025e48892c40d621eb41cc846c1fa4fb.png\")
means 7 multiplied together 2 times.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=694d7117d4d3fd5e8de7dac02c06df76.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=90eedaf741cc494ddeb9e07584f932dc.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d354a000c036b295b4c6a7424a7d6560.png\")
)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
Substitute n = 0.4 in the expression.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=52ba7fc3d24236cc8f75fd9c343b8bd4.png\")
(Substitute n = 0.4)
Base is 0.4 and exponent is 2.
\(0.4)2 means 0.4 multiplied together 2 times.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f0d54c83af490fa5a0439b8193a6c15a.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5c422d89a9dbda2499b9c1b399425484.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=067d94254d41005f86ad679a5fb63cb5.png\")
)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
When n = 7 the solution is 49.
\When n = 0.4 the solution is 0.16.