You can put this solution on YOUR website! Well a rational function is undefined only when its denominator equals to zero so to find where its undefined we will set the denominator equal to 0.
p^2-49=0
And now we solve this basic quadratic equation. Start by adding 49 to both sides.
p^2-49+49=0+49
p^2 = 49
Now we take the square root of both sides.
p = +/- 7
And thats your answer, the above rational function is undefined at -7 and 7
You can put this solution on YOUR website! find all numbers for which the rational expression is undefined
p^3-5p
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p^2-49
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The expression is undefined when the denominator is zero.
p^2-49 = 0
(p-7)(p+7) = 0
p = 7 or p = -7
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Cheers,
Stan H.
PS: Reply to stanbon@comcast.net since the algebra.com
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