Question

Find any real numbers for which of the following expressions are undefined

1.) 3x/3x+4
2.) x-6/x^2-4

Answer 1

When the denominators are zero, the expressions are undefined. The corresponding values of x are:

1. 3x+4=0, x=-4/3
2. x^2-4=0, x=2 and -2

Answer 2

Given
1.) 3x/3x+4
3x+4= 0
3x = -4
x = -4/3
2.) x-6/x^2-4
x^2-4=0
x^2=4
x = ±√4
x = ±2

As we know denominators are zero when the expressions are undefined

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