Question

4x5^40+2x5^41+2x5^42 supra 2^106

Answer 1

(4 x 5^40 + 2 x 5^41 + 2 x 5^42) / 2^106 = [5^40 x ( 4 + 2x5 + 2x5^2)] / 2^106 = [5^40 x (4+10+50)] / 2^106 = (5^40 x 64) / 2^106 = (5^40  x 2^6) / 2^106 = 5^40 / 2^(106-6) = 5^40 / 2^100