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BARSIC [14]
4 years ago
14

The polynomial equation x cubed + x squared = negative 9 x minus 9 has complex roots plus-or-minus 3 i. What is the other root?

Use a graphing calculator and a system of equations.
Mathematics
2 answers:
Ymorist [56]4 years ago
5 0

Answer:

-1,3i,-3i

Step-by-step explanation:

X^3+x^2=-9x-9

x^3+x^2+9x+9=0

x^2(x+1)+9(x+1)=0 factorize by taking x+1 common factor

(x+1)(x^2+9)=0

x+1=0 then x=-1

(x^2+9)=0 then x=+ 0r - 3i

anygoal [31]4 years ago
4 0

Answer:

-1

Step-by-step explanation:

got it right on edy.

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Solve for x: 5<-4x-11<13​
kap26 [50]

Answer:

- {4}  < x <  - 6 \\

Step-by-step explanation:

5 <  - 4x - 11 < 13

Add 11 to both sides of the inequality to make - 4x stand alone

5 + 11 <  - 4x - 11 + 11 < 13 + 11 \\ 16 <  - 4x < 24

Divide both sides by - 4

-  \frac{16}{4}  <   \frac{ - 4x}{ - 4}  <   - \frac{24}{4}  \\   - {4}  < x <  - 6

Reverse the signs

We have the final answer as

-  4 > x >  - 6 \\

Hope this helps you

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3 years ago
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kogti [31]
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SO answer is YES
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3 years ago
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kirill115 [55]
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4 years ago
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kap26 [50]

Answer:

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Step-by-step explanation:

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