Question

已知2x-3y=1,求4的2x方乘8的2y方分之3-1的值

Answer 1

4^2x*3/8^2y-1

=(2^2)^2x*3/(2^3)^2y-1

=2^4x*3/2^6y-1

=3*2^(4x-6y)-1

=3*2^[2(2x-3y)]-1

=3*2^2-1

=12-1

=11