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allochka39001 [22]
2 years ago
14

Rationalize the denominators: 4/√x+2

Mathematics
2 answers:
puteri [66]2 years ago
6 0
\dfrac{4}{\sqrt{x}+2}=\dfrac{4}{\sqrt{x}+2}\cdot\dfrac{\sqrt{x}-2}{\sqrt{x}-2}=\dfrac{4(\sqrt{x}-2)}{(\sqrt{x})^2-2^2}=\dfrac{4\sqrt{x}-8}{x-4}\\\\Use:(a+b)(a-b)=a^2-b^2
OLga [1]2 years ago
3 0
\frac{4}{\sqrt{x + 2}} = \frac{4}{\sqrt{x + 2}} * \frac{\sqrt{x + 2}}{\sqrt{x + 2}} = \frac{4\sqrt{x + 2}}{x + 2}
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Fraction:

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krok68 [10]

Answer:

12

Step-by-step explanation:

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3 years ago
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Harlamova29_29 [7]

Answer:

Changes made to your input should not affect the solution:

(1): "x7"   was replaced by   "x^7".

Step by step solution :

Step  1  :

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                  100

Equation at the end of step  1  :

  5           x75

 ——— • ———

 100        100

Step  2  :

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Simplify   ——

                 20

Equation at the end of step  2  :

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Step  3  :

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Step-by-step explanation:

4 0
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MArishka [77]

Answer:

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3 0
3 years ago
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Answer:

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x = 4

<em>Check if you want to make sure.</em>

3 0
2 years ago
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