Question

Use MATLAB to find the polynomial that has the roots $x = -2 \pm 5j, -7$. Multiple Choice $11x^3 + x^2 + 203x + 57 = 0$ $11x^3 + x^2 + 57x - 203 = 0$ $x^3 + 11x^2 + 57x + 203 = 0$ $x^3 - 11x^2 + 57x - 203 = 0$

          Use MATLAB to find the polynomial that has the roots $x = -2 \pm 5j, -7$.
Multiple Choice
$11x^3 + x^2 + 203x + 57 = 0$
$11x^3 + x^2 + 57x - 203 = 0$
$x^3 + 11x^2 + 57x + 203 = 0$
$x^3 - 11x^2 + 57x - 203 = 0$

Use MATLAB to find the polynomial that has the roots x = -2 ± 5j, -7.
Multiple Choice
11x^3 + x^2 + 203x + 57 = 0
11x^3 + x^2 + 57x - 203 = 0
x^3 + 11x^2 + 57x + 203 = 0
x^3 - 11x^2 + 57x - 203 = 0

Added by Lisa C.

Elementary and Intermediate Algebra

Alan S. Tussy, R. David Gustafson 5th Edition

Instant Answer

Solved by Expert Maujee Lal

Step 1

In this case, x=257 is a root, so (x - 257) is a factor of the polynomial. Show more…

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How to Solve This in MATLAB Use MATLAB to find the polynomial that has the roots x=257. Multiple Choice: 11 + 2 + 203x + 57 = 0 11 + 2 + 57203 = 0 112 + 57 + 203 = 0 311 + 57203 = 0