points of discontinuity for each rational function. y=x+5 / x²+9 x+20 is x = -4
Given,
y=x+5 / x²+9 x+20
It can be expressed in the form of -
⇒ y = (x+5) / (x+5) (x+4)
⇒ y = 1 / (x+4)
The function will be undefined if the denominator will be 0
⇒ x+4 = 0
⇒ x = -4
So, we can conclude that the given function will be having points of discontinuity as x = -4
To learn more about discontinuity from given link
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