If the coefficient of `x^7` in `(ax^2+(1)/(bx))^11` equals the coefficient of `x^-7` in `(ax-(1)/(bx^2))^11`, then a and b satisfy the relation

If the coefficient of x^(7) in (ax ^(2) +(1)/(bx)) ^(11) equals the corfficient of x^(-7) in (ax- (1)/(bx^(2)))^(11), then a and b satisfy the equation-

If the coefficient of x^7 in (ax^2+1/(bx))^11 is equal to the coefficient of x^-7 in (ax-1/(bx^2))^11 then

If the coefficient of x^7 in (ax^2+1/(bx))^11 is equal to the coefficient of x^-7 in (ax-1/(bx^2))^11 then

If the coefficient of x^8 in (ax^2+1/(bx))^13 is equal to the coefficient of x^-8 in (ax-1/(bx^2))^13 , then a and b will satisfy the relation

If the coefficient of x^8 in (ax^2 + (1)/(bx))^13 is equal to the coefficient of x^(-8) in (ax - (1)/(bx^2))^13 , then a and b will satisfy the relation :

Find the coefficient of x^7 in (x^2+(1/x))^11

If the coefficient of x^(8) in (ax^(2)+(1)/(bx))^(13) is equal to the coefficient of x^(-8) in (ax-(1)/(bx^(2)))^(13) then a and b will satisfy the relation

If the coefficient of x^10 in (ax^2 + (1)/(bx))^11 is equal to the coefficient of x^(-10) in (ax - (1)/(bx^2))^11 then show that ab = -1