Question

$(6,25 ^{40} impartit 2,5 ^{79} ) * 0,1 ^{100} *10^{100}$

Answer 1

(625^40/100^40 : 25^79/10^79) * 1^100/10^100 * 10^100 = 
[(5^4)^40 ; (5^2)^79] * 1^100/10^100 * 10^100 = 
(5^160 : 5^158) * 1^100/10^100 * 10^100 = 
5^2 * 1^100/10^100 * 10^100/1 = 
5^2 * 10^100/10^100 = 5^2 * 1 = 25*1 = 25