Write a polynomial of least degree with roots 8 and -7

If a polynomial has 9 for a root, (x-9) is a factor of the polynomial.

A polynomial with roots -8, 9, 10, and -11, has as a factor

Step-by-step explanation:

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If a polynomial has 9 for a root, (x-9) is a factor of the polynomial.

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11