Q. 12 B5.0( 6 Votes )

# If p(x) = x + 4, let us write the value of p(x) + p(–x).

We know,

p(x) = x + 4 …(i)

Now, to find p(-x), just replace x by –x in the above expression. Let us do it.

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

p(-x) = -x + 4 …(ii)

Now, add equations (i) and (ii), we get

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

p(x) + p(-x) = x + 4 – x + 4

p(x) + p(-x) = 8

Thus, the values of p(x) + p(-x) = 8

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