The equation is .
Compare the above equation with standard form of quadratic equation.
a = 4, b = 4, and c = 1.
The quadratic formula : .
(Substitute : a = 4, b = 4, and c = 1)
The solution of .
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(Substitute : a = 4, b = 4, and c = 1)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ef648248da244568f2256b4c6bb5902b.png\")
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.