If in the expansion of , the coefficients of and are and respectively, then is
Explanation for the correct option:
Step -1: Form the equations:
The series can be expanded as
Now it is given that the coefficient of is , so and thus .
Also it is given that the coefficient of is , so
Step- 2: Find the value of :
In the equation , use and solve for .
And so the value of is .
Hence, the correct option is C.