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Bionomial Expantion, and expanding expressions useing Pascal's Triangle.

Alright, I am having some trouble with Bionomial Expantion, and expanding expressions useing Pascal's Triangle.
Forexample I have the equation that I have to expand: (2x+1)^4.

And the Pascal's Triangle grid i already did for you.

1
1 1
1 2 1
1 3 3 1
1 4 6 4 1

From there I am having trouble expanding (2x+1)^4. Can you help me out? I would really appreciate it!


(If you can help me find the answer and explain how you got it I will follow you!"

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a=2x. b=4.
So (a+b)^4=1a^4+4(a^3)(b)+6(a^2)(b^2)+4(a)(b^3)+1b^4.
I got all that from Pascal's Triangle.
Now I'm ready to put in values for a and b.
1(2x)^4+4(2x)^3(4)+6(2x)^2(4^2)+4(2x)(4^3)+(4^4).

16x^4+128x^3+384x^2+512x+256

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Oops, b=4 should be changed to b=1
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homework help huh The_Doctor?? 0.o

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