Evaluate the limit:lim𝑥→−5𝑥2+𝑥−20𝑥+5=
Question
Evaluate the limit:lim𝑥→−5𝑥2+𝑥−20𝑥+5=
Solution
To evaluate the limit of the function as x approaches -5, we first need to simplify the function. The function is a rational function, and it can be simplified by factoring.
The function is: (x^2 + x - 20) / (x + 5)
First, factor the numerator:
x^2 + x - 20 = (x - 4)(x + 5)
So the function becomes:
(x - 4)(x + 5) / (x + 5)
The (x + 5) terms cancel out, leaving:
x - 4
Now, substitute x = -5 into the simplified function:
-5 - 4 = -9
So, the limit of the function as x approaches -5 is -9.
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