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Step2247 [10]
2 years ago
15

Q16. Find x^2 + 1/x^2 , if x + 1/x = 3

Mathematics
1 answer:
erica [24]2 years ago
8 0

Answer:

2 \times  x \times \frac{1}{x}  =  2 \\  {x}^{2}   +  {y }^{2}  + 2xy =  {(x + y)}^{2} \\ {x}^{2}  +  \frac{1}{ {x}^{2} }  + 2 = {(x +  \frac{1}{x} })^{2}  =  {3}^{2}  = 9

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maksim [4K]
<h2>Answer: 8</h2>

Step-by-step explanation:

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Therefore, Mel has to work at least 7.5 hours or 8 total hours.

3 0
1 year ago
Simplifly the expression 2(x - 5)
defon

Answer:

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Step-by-step explanation:

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2 years ago
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irina1246 [14]
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3 years ago
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Elina [12.6K]
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4 0
3 years ago
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4 0
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