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PenhaFerreira1
@PenhaFerreira1
May 2020
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Determine o valor numérico da expressão:
X² - 4/X + 2 + X² - 3x+ 2/x-1 para x = 4
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poty
Verified answer
X² - 4/X + 2 + X² - 3x+ 2/x-1= ------------------>para x = 4
4² - 4/4 + 2 + 4² - 3.4 + 2/4 - 1=
16 - 1 + 2 + 16 - 12 + 1/2 - 1 = ---->mmc=2
32 - 2 + 4 + 32 - 24 + 1 - 1 =
32 + 4 +32 + 1 -2 -24 -1=
69 - 27 =
42
1 votes
Thanks 4
PenhaFerreira1
a reposta que está no livro , é 4
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Verified answer
X² - 4/X + 2 + X² - 3x+ 2/x-1= ------------------>para x = 44² - 4/4 + 2 + 4² - 3.4 + 2/4 - 1=
16 - 1 + 2 + 16 - 12 + 1/2 - 1 = ---->mmc=2
32 - 2 + 4 + 32 - 24 + 1 - 1 =
32 + 4 +32 + 1 -2 -24 -1=
69 - 27 = 42