or
or
হলে এর মান কত?
a^-3=0.2
Or,1/a^3=2/10
Or,1/a^3=1/5
Or,a^3=5
Now, a^12= (a^3)^4
i.e. a^12=(5)^4=5×5×5×5
Ans:625
a-3 = 0.2
1/a^3= 2/10
a^3 = 10/2
a^3 = 5
a^(3×4) = (5)^4
a^12 = 625 answer.
