Asked by kim
Find all rational zeros of the polynomial function P(x)=x^4 + 2 x^3 - 13 x^2 + 4 x - 30.
Enter the rational zeros in a comma separated list. If there are none, enter "none".
-3| 1 2 -13 4 -30
-3 15 -6 30
1 -5 2 -10 0
so (x+3)(x^3-5x^2+2x-10
so
5| 1 -5 2 -10
5 0 10
1 0 2
so (x+3)(x-5)(x^2-0x+2)
then sqrt-8
so I got -3,5,i-sqrt2,i+sqrt2
where am I going wrong
Enter the rational zeros in a comma separated list. If there are none, enter "none".
-3| 1 2 -13 4 -30
-3 15 -6 30
1 -5 2 -10 0
so (x+3)(x^3-5x^2+2x-10
so
5| 1 -5 2 -10
5 0 10
1 0 2
so (x+3)(x-5)(x^2-0x+2)
then sqrt-8
so I got -3,5,i-sqrt2,i+sqrt2
where am I going wrong
Answers
Answered by
Bosnian
In google type :
mathportal roots calculator
When you see list of result click on :
Online Polynomial Roots Calculator with explanation
When page be open in rectangle type :
x^4 + 2 x^3 - 13 x^2 + 4 x - 30
and cick option :
Find Roots
You will see solution step by step
mathportal roots calculator
When you see list of result click on :
Online Polynomial Roots Calculator with explanation
When page be open in rectangle type :
x^4 + 2 x^3 - 13 x^2 + 4 x - 30
and cick option :
Find Roots
You will see solution step by step