Question

please answer my this question
$if \: x + \frac{1}{x} = 4 \\ find \: x - \frac{1}{x} \: and \: {x}^{3} - \frac{1}{ {x}^{3} }$
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Answer 1

Answer:

Let one of the numbers be= x.

Then, the other number becomes x + 15

According to the question,

x + x + 15 = 95

⇒ 2x + 15 = 95

⇒ 2x = 95 - 15

⇒ 2x = 80

x=2

⇒ x = 40

First number = x = 40

And, other number = x + 15 = 40

Answer 2

Answer:

Step-by-step explanation:

x + x + 15 = 95

 2x + 15 = 95

2x = 95 - 15

2x = 80

x=2

x = 40

First number = x = 40

And, other number = x + 15 = 40