In the expansion of (2x−x23)10, the coefficient of x4 is?
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Using binomial theorem, write down the expansions of the following: (1−3x)7
Find the coefficient of x6y3
in the expansion of (x+2y)9˙
Find a if 17th and 18th terms in the expansion of (2+a)50
The coefficient of x50 in (x+101C0)(x+101C1)…..(x+101C50) is
Find the number of terms in the expansions of the following: (2x+3y−4z)n
In the expansion of (1+a)m+n prove that coefficients of am and an are equal.
Let (5+26)n=p+f where n∈N and p∈N and 0<f<1 then the value of, f2−f+pf−p is
If the sum of the coefficients in the expansion of (q+r)20(1+(p−2)x)20 is equal to square of the sum of the coefficients in the expansion of [2rqx−(r+q)⋅y]10, where p, r,q are positive constants, then