Evaluate the limit:lim𝑥→−5𝑥+5𝑥2−25=
Question
Evaluate the limit:lim𝑥→−5𝑥+5𝑥2−25=
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Solution
To evaluate the limit of the function as x approaches -5, we first substitute -5 into the function:
(-5 + 5) / ((-5)^2 - 25)
This simplifies to:
0 / (25 - 25)
Which is 0/0, an indeterminate form.
However, we can simplify the function by factoring:
(x + 5) / (x^2 - 25)
The denominator is a difference of squares, so it can be factored as:
(x + 5) / ((x - 5)(x + 5))
The (x + 5) terms cancel out, leaving us with:
1 / (x - 5)
Now, we substitute -5 back into the simplified function:
1 / (-5 - 5)
Which simplifies to:
1 / -10
So, the limit of the function as x approaches -5 is -1/10.
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