SOLUTION: Please help me, Im having so much trouble with this question.
Use Pascals triangle to expand (x-7)^5
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-> SOLUTION: Please help me, Im having so much trouble with this question.
Use Pascals triangle to expand (x-7)^5
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You can put this solution on YOUR website! Pascal's triangle is very useful for finding the
coefficients of any expression of the form , where etc.
Each entry is the sum of the entries on the
previous line on the left and right.
the triangle looks like:
1 - - - - - 1
1 - - 2- - 1
1 - 3 - -3 -1
1 4 - 6 - 4 1
It's hard to show on the computer, but
the next line is the one you need:
1 - 5 - 10 - 10 - 5 - 1
These are the coefficients of the
expansion of
It tells you there are 6 terms in
the expansion.
The first term is , and the coefficient is
The last term is , and the coefficient is also
The whole expansion looks like
You may wonder what this does for you.
Well, I you just say and , your problem is solved
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Here's a list of the nasty powers of :
----------------- answer
Hope this helps
