6^(4m+ 1)

2m- 1+m+2=7, then m=2.

14a (2n) = (a n) 2 = 64, then the original formula =4*64=256.

( 1)a^( 1+3+6)+a^(3+3+4)=2a^ 10

(2)4x^( 1+2+3)+x^(3+3)-2x^(2+4)=3x^6