Math, asked by Morinkashi, 2 months ago

Please give me the solution to this question.

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Answers

Answered by guptasudha3478
2

Answer:

 a. \:  \: {2}^{x + 1}  -  {2}^{x - 1}  = 15 \\  {2}^{x}  \times 2 -  {2}^{x}  \times  \frac{1}{2}  = 15 \\  {2}^{x}  (2 -  \frac{1}{2} ) = 15

a. Yes we can write.

b.

 {2}^{x} (2 -  \frac{1}{2} ) = 15 \\  {2}^{x}   \binom{4 - 1}{2}  = 15 \\  {2}^{x}  \times \frac{3}{2}  = 15 \\  {2}^{x}  =  \frac{15 \times 2}{3}  \\  {2}^{x}  = 10

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