Find the coefficient of `x^(7)` in the expansion of `(2x^(2)-(1)/(x))^(20)`

Find the coefficient of x^(9) in the expansion of (2x^(2)-(1)/(x))^(20)

Find the coefficient of : x^(10) in the expansion of (2x^(2)-(1)/(x))^(20)

Find the coefficient of x^(8) in the expansion of (x^(2)-(1)/(x))^(10)

Find the coefficient of x^(3) in the expansion of (2-3x)^(7) .

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

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

Find the coefficient of x^(-7) in the expansion of (2x-(1)/(3x^(2)))^(11)

Find the coefficient of x^(7) in the expansion of (ax^(2) + (1)/(bx))^(11) . (ii) the coefficient of x^(-7) in the expansion of (ax + (1)/(bx^2))^(11) . Also , find the relation between a and b , so that these coefficients are equal .

Find the coefficient of x^(7) in the expansion of (ax^(2) + (1)/(bx))^(11) . (ii) the coefficient of x^(-7) in the expansion of (ax - (1)/(bx^2))^(11) . Also , find the relation between a and b , so that these coefficients are equal .

Find the coefficient of x^(7) in the expansion of (ax^(2) + (1)/(bx))^(11) . (ii) the coefficient of x^(-7) in the expansion of (ax + (1)/(bx^2))^(11) . Also , find the relation between a and b , so that these coefficients are equal .