MCQ
If $p(x) = x + 4$ then $p(x) + p(-x) = ?$
- A$4$
- B$2x$
- C$0$
- ✓$8$
✓
Answer
Correct option: D.
$8$
Let: $p(x) = (x + 4)$
$\therefore p(-x) = (x + 4)$
$= -x + 4$
Thus, we have: $p(x) + p(-x) =\{(x + 4) + (-x + 4)\}$
$= 4 + 4$
$= 8$
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