Question 250591
(6x^4)^2
to square these exponents you multiply them so we get 36x^(4*2)
and 
(2x^4)^3
4x^(12)
which gives us 36x^8*8x^12 so we combine 

to  multiply  exponents we add them so we get 
36x^8*8x^1236*8*x^(8+12)
 36*8*x^(20)=288x^20