2的n加3次方等于10,3的2n加6次方等于6,则6的2n加6次方等于?

6^(2n+6)
=(2*3)^(2n+6)
=2^(2n+3+3)*3^(2n+6)
=2^3*2^(2n+3)*3^(2n+6)
=8*10*6
=480=2^3*2^(2n+3)*3^(2n+6)2的3次方怎么来的2^(2n+3+3)=2^3*2^(2n+3)