how is x^2 the answer to this question??
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Originally Posted by t-dot how is x^2 the answer to this question?? see post #3 here.
hence we have:
I like to look at it this way
Then we get
Then we have:
or you could do
and simplify to get
Yet another approach . . . How is the answer to this question? .
We have: .
Originally Posted by Soroban Hmmmm... This is true so long as x is not negative. If it is, then
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