jasminee61123 jasminee61123

24-08-2021
Mathematics

contestada

Please show work so I can see how to do it.

Please show work so I can see how to do it class=

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thaonguyen1 thaonguyen1

24-08-2021

Answer:

a. D = R \ {13}

b. D = [-9;+∞)

D = R \ { [tex]\frac{-1}{2}[/tex] }

Step-by-step explanation:

a. 13 - x ≠ 0

x ≠ 13

D = R \ {13}

b. 9 + x ≥ 0

x ≥ -9

D = [-9;+∞)

c. 2x + 1 ≠ 0

x ≠ [tex]\frac{-1}{2}[/tex]

D = R \ { [tex]\frac{-1}{2}[/tex] }

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