Question

12. If p(x) = x +4 then p(x) +p(-x) = ?
(a) 0
(b) 4
(c) 2x
(d) 8
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Answer 1

p(x) = x + 4

p(-x) = -x + 4 = 4 - x

p(x) + p(-x) = x + 4 + 4 - x

⇒ p(x) + p(-x) = x - x + 4 + 4

⇒ p(x) + p(-x) = 0 + 8

⇒ p(x) + p(-x) = 8

$\boxed{\bold{p(x) + p(-x) = 8}}$

Hence Option (d) is the answer.

Answer 2

Answer:

d 8 is the correct answer