Answers by visitors named: rroyd

PLease explain furter a little the steps of this... 4(5^(2n+1))-10(5^(2n-1))/ ( 2(5^n)) = 2(5^(2n-1) ) ( 2(5^2 - 5(1) )/2(5^n)) = 5^(n-1) (50 - 5) = 225 (5^(n-1) )