Question

Determine if 3 is a zero of the polynomial x^2 - 2x + 5

Answer 1

p(x) =

${x}^{2} - 2x + 5$

= p(3) =

${3}^{2} - 2(3) + 5$

= 9-3+5 = 11.

Hence, 3 is not a zero of the given polynomial.