How do you find the nonpermissable replacement for the variable in this expression?
:( I'm so confused.
Stacey Warren - Expert brainly.com
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That would be the values of x that cause the fraction to be undefined. So we look for the values of x that make the denominator 0 and those are the nonpermissable replacements.
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So that would cause the denominator to be 0 and so it is not permitted as a replacement.
Thank you very much :)
I think I understand, but how do you figure out if they are equal to 0?
You set it equal to 0 so you can find what value cannot replace x.
Think of it this way. It is illegal to have a denominator of 0. So if the denominator is x, then it is illegal for x to be 0.
If the denominator is x-2 then it is illegal for x to be 2
If the denominator is x+3, then it is illegal for x to be -3
And so on...
And you can find these numbers by writing (denominator) = 0 and solving. Then you will find the illegal numbers.