SOLUTION: the square of anumber degreased by the square of one half the number is 108. find the number

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Question 36946: the square of anumber degreased by the square of one half the number is 108. find the number
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
Let the number be x
so half the number is (x/2)

And so +x%5E2+-+%28x%2F2%29%5E2+=+108+
+x%5E2+-+x%5E2%2F4+=+108+
+%283x%5E2%29%2F4+=+108+
+3x%5E2+=+432+
+x%5E2+=+144+
+x+=+sqrt%28144%29+ or +x+=+-+sqrt%28144%29+
x = 12 or x = -12

jon.