00:01
So we need to find first three terms of expansion of x plus 5 by whole to the power 22.
00:07
So we know that x plus a whole power n expansion is nc 0 x to the power n, a to the power 0, nc 1 x to the power n minus 1, a to the power 1, nc 2, x to the power n minus 1, nc 2, x2, x to the power n minus 2, a to the power 2 and so on.
00:36
In between we have a term ncr x to the power n minus r, a to the power n, r.
00:43
And in last we have nc n, x to the power n minus n that is 0 and a to the power.
00:55
So now we are interested in first three terms.
00:59
So these are the three terms.
01:00
So if we do expansion of x plus 5 by whole power 22, so t1 would be simply 22c0 x to the power 22 and 5 y to the power 0...