how i can use roots in matlab

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ays ays
ays ays 2019-7-2
评论： ays ays 2019-7-2
i need help to use roots function in matlab i have this
7x^4+5x^3=-4x-5
and i need to do it with the roots anyone can helpe me ?
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Torsten
Torsten 2019-7-2
编辑：Torsten 2019-7-2
Hint:
7x^4 + 5x^3 = -4x - 5
<->
7x^4 + 5x^3 + 0x^2 + 4x + 5 = 0

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Stephan
Stephan 2019-7-2
编辑：Stephan 2019-7-2
RHS has to be zero, then put the coefficients in descending order into a vector - read here:
https://de.mathworks.com/help/matlab/ref/roots.html
p = [7 5 0 4 5]
result = roots(p)

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