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The expression is
.
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Find the square of sum.
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(
Square of a sum)
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(Substitute
and
)
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(Substitute
and
)
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.
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\
.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=477247cffac312e10545bb84b5cc56b3.png\")
.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3f2a192f9ce7aa565f305de80802de0d.png\")
(Square of a sum)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=bde6673c2693651ac21e409416a7a085.png\")
(Substitute ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=aa120eaf6bf095a42d2844267da46611.png\")
and ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1f2dfd3f29bb0fe73f3bd8265dcd3c2d.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=74cc2478ff30a4e0cc57ede6d42794e2.png\")
(Substitute ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7dbd65f32f67a28af228eeae338cfed8.png\")
and ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9aa8fdc3c596e49a85a9079584ed1f6c.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a777cd24e1f41c374c455eadb4e1bde1.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a777cd24e1f41c374c455eadb4e1bde1.png\")
.