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  • 11-05-2022
  • Mathematics
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If x > 3, which of the following is equivalent

(LOOK AT IMAGE TO SEE ANSWER CHOICES)

A

B

C

D

If x gt 3 which of the following is equivalent LOOK AT IMAGE TO SEE ANSWER CHOICES A B C D class=

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Аноним Аноним
  • 11-05-2022

Answer:

B

Step-by-step explanation:

Let's simplify the given function.

  • [tex]\frac{1}{\frac{1}{x+2} +\frac{1}{x+3} }[/tex]
  • [tex]\frac{1}{\frac{x+3+x+2}{(x+2)(x+3)} }[/tex]
  • [tex]\frac{(x+2)(x+3)}{2x+5}[/tex]

Now, let's take x = 4 as it is given x > 3.

  • (4 + 2)(4 + 3)/2(4) + 5
  • 6(7)/13
  • 42/13

Without evaluating, we can see the answer is B because on multiplying the factors in the numerator is simplified to the answer given in the option.

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