Find -11/15 if (n) =5n +6

Mathematics

1 answer:

Anestetic [448]3 years ago

6 0

F(-11/5)=5(-11/5)+6
f(-11/5) = -11+6
f(-11/5) = -5
Hope this helps!

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What are all of the real roots of the following polynomial? f(x) = x5 + 5x4 - 5x3 - 25x2 + 4x + 20

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F(x)=x^5 + 5*x^4 - 5*x^3 - 25*x^2 + 4*x + 20

By examining the coefficients of the polynomial, we find that
1+5-5-25+4+20=0 => (x-1) is a factor
Now, reverse the sign of coefficients of odd powers,
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By the rational roots theorem, we can continue to try x=2, or factor x-2=0
2^5+5(2^4)-5(2^3)-25(2^2)+4(2)+20=0
and similarly f(-2)=0
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see attached

Step-by-step explanation:

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