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# Find the zeros of the following quadratic polynomials:p(x) = x2 — 81

Here p(x) = x2 — 81

To find the zeros of p(x), let p(x) = 0

x2 – 81 = 0

(x)2 – (9)2 = 0

(x – 9) (x + 9) = 0

[Using the identity: (a2 – b2) = (a – b) (a + b)]

x = 9 or x = –9

–9 and 9 are the zeros of the quadratic polynomial p(x).

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