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Mathematics
Aden Duran
26 June, 14:15
Is (x + 1) a factor of
f (x) = x3 + 2x2 - 5x - 6?
Yes
No
+2
Answers (
2
)
Stella Lester
26 June, 15:20
0
Yes
Step-by-step explanation:
If x + 1 is a factor
x = - 1 should be a root
Check for the remainder:
(-1) ³ + 2 (-1) ² - 5 (-1) - 6
0
Therefore it's a root, hence x+1 is a factor
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Melina Moody
26 June, 17:03
0
Yes.
Step-by-step explanation:
You can find it out by factoring but ill do it easier way.
(x + 1) = 0 put the first and second equation to 0
x = - 1
x³ + 2x² - 5x - 6 = 0 Now plug in the x in the equation
(-1) ³ + 2 (-1) ² - 5 (-1) - 6 = 0
0 = 0
so (x + 1) is a factor.
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