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Calcular:
P(m–3) – P(m+3) + 6
→P(m – 3)
P(m – 3) = -x + 2
= -(m - 3) + 2
= -m + 3 + 2
= 5 - m
→P(m + 3)
P(m + 3) = -x + 2
= -(m + 3) + 2
= -m - 3 + 2
= -m - 1
⇒Calcular:
P(m–3) – P(m+3) + 6
5 - m - (-m - 1) + 6
5 - m + m + 1 + 6...............(Se van las "m")
5 + 1 + 6
12