If f(x) = x - 11 then find f(x) – f(-x).
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Answer:
2x
Step-by-step explanation:
f(x) = x - 11
f(-x) = -x - 11
f(x) – f(-x)
x - 11 -(-x - 11)
x - 11 + x + 11
= 2x
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