a=27¹⁰ = (3³)¹⁰=3³⁰
2*3³⁰=2a
45*9¹⁷=5*9*9¹⁷=5*9¹⁸=5*3³⁶=5*3⁶*3³⁰=3645a
81³⁰=(3⁴)³⁰ =(3³⁰)⁴=a⁴
54³*9¹¹=2³*27³*3²²=2³*3⁹*3²²=2³*3*3³⁰=24a
4^n=64
4^n=4^3
n=3
2^(2n+1)=2^(2*3+1)=2^7=128
2^4n=2^4*3=2^12=4096
4^(2n-3)=4^(2*3-3)=4^3=64
8^n+1= 8^3 +1=512+1=513