djuliagushina (4^(4a+4) +16^(2a+1))/2^(8a+3)= (2^(8а+8)+2^(8а+4))/2^(8a+3)= (2^8a(2^8+2^4))/(2^8a*2^3)=(256+16)/8=34

100-34=66

Ответ: на 66.