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Which shows all the values of x that make the rational expression 2x^2-72/5x^2-245 underlined

User Tibtof
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1 Answer

6 votes

Answer:

7 and -7

Explanation:

Correct question

Which shows all the values of x that make the rational expression 2x^2-72/5x^2-245 undefined

For the expression to be undefined, the denominator must be equal to zero

Hence 5x² - 245 =0

Add 245 to both sides

5x²-245+245 = 0+245

5x² = 245

x² = 245/5

x² = 49

x = ±√49

x =7 and -7

Hence the values of x that will make the function undefined are 7 and -7

User Ndsc
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