Question

49^n-36^n+1 дробь 6^n+1 + 7^n. Сократить дробь.Спасибо)

Answer 1

$dfrac{49^n-36^{n+1}}{6^{n+1}+7^n} = dfrac{7^{2n}-6^{2(n+1)}}{6^{n+1}+7^n} = dfrac{(7^n-6^{n+1})(7^n+6^{n+1})}{6^{n+1}+7^n} =7^n-6^{n+1}$