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For which value of x is the expression x-4 over x plus 3 undefined?
Wiki User
∙ 14y ago
The way for a fraction to be undefined is to have the lower number to be zero. So you only look at the bottom of the fraction and find what it would take to make it equal to zero.
x+3=0
You would have to subtract three from both sides and you would get x= -3.
So the answer is -3.
Wiki User
∙ 14y ago
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