1. ## roots in real

oose equation for x, find all solutions in real numbers
x^4-13*x^3+41*x^2+13*x-42 = 0
place the answers in increasing order
____≤____≤___≤___

the roots i fined x= -1,1,5,7 but they want the answer in real numbers =S?

2. ## Re: roots in real

Originally Posted by Petrus
oose equation for x, find all solutions in real numbers
x^4-13*x^3+41*x^2+13*x-42 = 0
place the answers in increasing order
____≤____≤___≤___

the roots i fined x= -1,1,5,7 but they want the answer in real numbers =S?
You have an error. 5 cannot be a rational root of the polynomial becuase it is not a factor of 42!

3. ## Re: roots in real

i mean 6 but how do i answer in real number, like 6/1?

4. ## Re: roots in real

Originally Posted by Petrus
oose equation for x, find all solutions in real numbers
x^4-13*x^3+41*x^2+13*x-42 = 0
place the answers in increasing order
____≤____≤___≤___

the roots i fined x= -1,1,5,7 but they want the answer in real numbers =S?
Petrus,

"Find all solutions in real numbers" means you are to find all the solutions which are real (like 6), as opposed to complex (like 2+i).

So assuming you have found all the solutions (I haven't checked your work), you are done. 6 is 6, you don't have to write it any other way.

5. ## Re: roots in real

sorry i did misinterpreted what real number is ^^ solved it =D=D=D