Question

(a+b)^7

Answer 1

I'm assuming you're expanding this? Try using pascal's triangle.

http://en.wikipedia.org/wiki/Pascal%27s_triangle

Answer 2

i dont understand pascal triangle.

Answer 3

alright so for pascals triangle you start with 1's at the top and add 1's on the left and right sides of each 1 until your given expansion

Answer 4

i know how to set the triangle but i dont know how to use it with the equations

Answer 5

alright so the terms go like this , say your exponent is 6

\[a^6+a^{6-1}b^1+a^{6-2}b^{1+1}.......b^6\]

Answer 6

so basically starting at \[a^6, you subtract one to the term before it

Answer 7

so the second term would be

where as starting from
\[b^0\], you add 1 until you get to 6

Answer 8

i start a b^1 or b^0??? you put b^1 on the example

Answer 9

so the first term is

\[a^6b^0\]

Answer 10

the next term subtract 1 from a and add 1 to b

Answer 11

\[a^5b^1\]

Answer 12

next would be \[a^4b^2\]
do this till

\[b^6\]