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aalyn [17]
3 years ago
7

If f(1) = 0, what are all the roots of the function f(x)=x3+3x2-x-3 ?

Mathematics
1 answer:
finlep [7]3 years ago
4 0
The roots are 1, -3 and -1.
Solving a cubic equation:
http://www.1728.org/cubic2.htm



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Solve the inequality -5(d-2)>35
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Answer:

d < -5

Step-by-step explanation:

Okay, so the equation is  -5(d-2)>35

First we have to use distributive property to get rid of the parenthesis.

we do -5(d) --> -5d

then, -5(-2) --> 10

So now we just redo the equation---

-5d + 10 > 35

now you have to isolate d, the variable

First, to isolate you have to get rid of 10. Subtract 10 on both sides.

-5d + 10 > 35

      - 10    -10

----------------------

-5d       >  25

Then you have -5d > 25. You have to do the opposite operation again to make the d by itself, so you divide -5 on each side.

   -5d > 25

   -----    -----

    -5       -5

-5d/-5 is d because the -5's cancel out. 25/-5 is -5. Now, you have to flip the equation because when working with inequalities, you have to flip the symbol.

SO,,, the answer is

d < -5

Hope this helps!!

-Ketifa

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