Question

express as power of 2 in 4.2^n-5.2^n+2​

Answer 1

Answer:

4² 5² ok done now please

Step-by-step explanation:

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Answer 2

Answer:

2^(2n-1).

Step-by-step explanation:

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

by using formula (a^(x+y)) = a^x × a^y.