Given that a = 2x & # 178; + 3ax-2x-1, B = - X & # 178; - ax + 1, and the value of 3A + 6B has nothing to do with X, find the value of a?

Given that a = 2x & # 178; + 3ax-2x-1, B = - X & # 178; - ax + 1, and the value of 3A + 6B has nothing to do with X, find the value of a?

3A+6B
=6x²+9ax-6x-3-6x²-6ax+6
=(3a-6)x+3
Independent of XD, the coefficient of X is 0
3a-6=0
a=2