Find the polynomial having roots at $2$ , $5$ , $- 4$ and $- 1$ .

Answer

The polynomial generated from the given zeros is: $P (x) = x^{4} - 2 x^{3} - 21 x^{2} + 22 x + 40$

Explanation

Step 1: Turn the zeros into factors:

Zero	Factor
$2$	$x - 2$
$5$	$x - 5$
$- 4$	$x + 4$
$- 1$	$x + 1$

Step 2: Multiply the factors together:

P (x) = (x - 2) \cdot (x - 5) \cdot (x + 4) \cdot (x + 1) = x^{4} - 2 x^{3} - 21 x^{2} + 22 x + 40

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Find the polynomial having roots at 2 , 5 , −4 and −1 .

The polynomial generated from the given zeros is: P(x)=x4−2x3−21x2+22x+40

Find the polynomial having roots at $2$ , $5$ , $- 4$ and $- 1$ .

The polynomial generated from the given zeros is: $P (x) = x^{4} - 2 x^{3} - 21 x^{2} + 22 x + 40$