JEE-Mains 2014 (7/30)
Algebra
Level
4
If the coefficients of \(x^3\) and \(x^4\) in the expansion of \((1+ax+bx^2)(1-2x)^{18}\) in the powers of \(x\) are both zero, then \((a,b)\) is equal to :
by
Sandeep Bhardwaj