SOLUTION: What numbers cannot be used for x in each rational expression?
a. (3x - 1)/(x^2 - 4)
b. 8/(3 + 2x)
c. 5/x
Can someone please explain this to me, I do not understand
Algebra ->
Rational-functions
-> SOLUTION: What numbers cannot be used for x in each rational expression?
a. (3x - 1)/(x^2 - 4)
b. 8/(3 + 2x)
c. 5/x
Can someone please explain this to me, I do not understand
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Question 421125: What numbers cannot be used for x in each rational expression?
a. (3x - 1)/(x^2 - 4)
b. 8/(3 + 2x)
c. 5/x
Can someone please explain this to me, I do not understand how or why. THanks in advance!!!!!! Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! What numbers cannot be used for x in each rational expression?
The denominators cannot be zero.
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a. (3x - 1)/(x^2 - 4)
x^2-4 cannot be zero
x cannot be 2 or -2
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b. 8/(3 + 2x)
3+2x cannot be zero
x cannot be -3/2
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c. 5/x
x cannot be zero
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Cheers,
Stan H.
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