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12.03.2021 •
Mathematics
Questions 1. What is the slope of (-1,1) and ( 2,4) Questions 2. what is the distance between (-1,1) and (2,4)
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Ответ:
(x+5) is not a factor of f since f(-5) is not zero.
Step-by-step explanation:
You can find the remainder of f divided by
(x-(-5)), by plugging in -5 into f. We can do this by remainder theorem.
If f(-5 ) is zero then (x-(-5)) is a factor of f.. If it is not zero, then (x-(-5)) is not a factor of f. This is by factor theorem.
Let's try it.
x^3 − 4x^2 + 3x + 7 with x=-5:
(-5)^3 − 4(-5)^2 + 3(-5) + 7
-125-4(25)+-15+7
-125-100-8
-125-108
-233
Since this is not zero then (x-(-5)) is not a factor of f.
Note: (x-(-5)) is the same as saying (x+5).