Question

if p(x)=ax+b.find zeroes of p(a).

Answer 1

$ax + b = 0 \\ ax = - b \\ x = \frac{ - b}{a} \: \: \: \: is \: the \: zero \: of \: p(x)$
if you want to calculate the value of p(x) at point x=a
p(a)= a^2+b

Answer 2

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