Question

сократите дробь (201^2-99^2)*3^3n-5/27^n-1

Answer 1

$frac{(201^{2}-99^{2})*3^{3n-5} }{27^{n-1}}= frac{(201+99)(201-99)*3^{3n-5}}{(3^{3})^{n-1}}= frac{(300*102)*3 ^{3n-5} }{3^{3n-3}} = \ \ 3*100*3*34*3^{3n-5-3n+3}=3400*3^{2}*3^{-2}=3400$

Answer 2

спасибо большое