If the coefficients of x2 and x11 in the binomial expansion of (1+ax+2x2) be 27 and (-192) respectively, show that, a= -1 NO LINKS PLEASE Share with your friends Share 1 Shivam Mishra answered this Dear Student, Your question is incomplete as you haven't provided the exponent of 1+ax+2x2?Please recheck your question and provide correct question so that we can provide you meaningful help. Regards -1 View Full Answer