Question

Сократить 50^n+1 / 2^n-2*5^2n+1​

Answer 1

Ответ:

= 40

Объяснение:

$\frac{ {50}^{n + 1} }{ {2}^{n - 2} \times {5}^{2n + 1}} =$

1).

${2}^{n - 2} =\frac{ {2}^{n} }{ {2}^{2} } = \frac{ {2}^{n} }{4}$

2).

${5}^{2n + 1} = {5}^{2n} \times {5}^{1} = {( {5}^{2}) }^{n} \times 5 = 5 \times {25}^{n}$

3).

${2}^{n - 2} \times {5}^{2n + 1} = \frac{ {2}^{n} }{4} \times 5 \times {25}^{n} = \frac{5}{4} \times {(2 \times 25)}^{n} = \frac{5}{4} \times {50}^{n}$

4).

${50}^{n + 1} = {50}^{n} \times {50}^{1} = 50 \times {50}^{n}$

5).

$\frac{ {50}^{n + 1} }{ {2}^{n - 2} \times {5}^{2n + 1}} = \frac{50 \times {50}^{n} }{ \frac{5}{4} \times {50}^{n}} = 50 \div \frac{5}{4} = 40$