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Dygosenai
@Dygosenai
January 2020
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O resto da divisao de x³+ax²+3x+1 por x+3 seja 1
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professorcesarb
Verified answer
X + 3 = 0
x = -3
x³ + ax² + 3x + 1 = 1
(-3)³ + a(-3)²+3 * (-3) +1 = 1
-27 + 9a - 9 + 1 = 1
9a - 35 = 1
9a = 1 + 35
9a = 36
a = 36/9
a = 4
0 votes
Thanks 0
albertrieben
Boa tarde Dygosenai
f(x) =
x³ + ax² + 3x + 1
x + 3 = 0
x = -3
f(-3) = -27 + 9a - 9 + 1 = 1
9a = 36
a = 36/9
a = 4
0 votes
Thanks 0
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Verified answer
X + 3 = 0x = -3
x³ + ax² + 3x + 1 = 1
(-3)³ + a(-3)²+3 * (-3) +1 = 1
-27 + 9a - 9 + 1 = 1
9a - 35 = 1
9a = 1 + 35
9a = 36
a = 36/9
a = 4
f(x) = x³ + ax² + 3x + 1
x + 3 = 0
x = -3
f(-3) = -27 + 9a - 9 + 1 = 1
9a = 36
a = 36/9
a = 4