Answer:
0
Step-by-step explanation:
( 2x^2 y^m) ^6 = 64 x^12
We are interested in the y variable
The y on the right is not there so we can write it as y^0
y^m^6 = y^0
We know that a^b^c = a^(b*c)
y^(m*6) = y^0
The bases are the same so the exponents have to be the same
6m =0
m=0
The missing exponent is 0
