# Find the value of *a* for which there is no term independent of *x* in the expansion of #(1 + ax^2)(2/x - 3x)^6#?

##### 1 Answer

Apr 30, 2018

a = 2

#### Explanation:

Upon expansion, the constant term must be eliminated to ensure complete dependence of the polynomial on x. Notice that the

Setting a = 2 eliminates the constant as well as

(Correct me if I'm wrong, please)