If a = 2 what is the value of 6a - 9 July 8, 2019 16 32 64 128 If $64^ -5 = 2^x$ what is the value of $x$ What is the value of 6a+9b If a =5 2 and 2= 2 a x what is the value of x If a=6 and b=5 what is the value of (a2-b2)2