Question

demonstreaza ca b=(5⁶²+5⁶¹+5⁶⁰)×961 e cub perfect​

Answer 1

$b=(5^{60} \cdot 5^{2} + 5^{60} \cdot 5^{1} + 5^{60}) * 961 = [5^{60} (5^{2}+5+1)] * 31^{2} = 5^{60} * 31 * 31^{2} =( 5^{20})^{3} * 31^{3} = (5^{20} * 31)^{3}$

rezulta ca este cub perfect