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Karolk
@Karolk
May 2020
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Considere a função de f(x) = 5x²+6, determine ?
a)f(-4) b) f(3) c) f(4) d) f(7)
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LaiseToledo
A) f(-4)= 5.(-4)2^+6 f(-4)= 5.16+6 f(-4)= 86
b)f(3)= 5(3)2^+6 f(3)= 5.9+6 f(3)= 51
c)f(4)= 5(4)2^+6 f(4)= 5.16+6 f(4)= 86
d)f(7)=5(7)2^+6 f(7)=5.49+6 f(7)= 251
5 votes
Thanks 7
claauLO
A) f(-4)
f(4)=5(-4)²+6 => 5(-16)+6 => -80+6 => f(4)=-74
B) f(3)
f(3)=5(3)²+6 => 5(9)+6 => f(3)=51
C)f(4)
f(4)=
5(4)²+6 => 5(16)+6 => f(4)=86
D)f(7)
f(7)=5(7)²+6 => 5(49)+6 => f(7)=251
2 votes
Thanks 6
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b)f(3)= 5(3)2^+6 f(3)= 5.9+6 f(3)= 51
c)f(4)= 5(4)2^+6 f(4)= 5.16+6 f(4)= 86
d)f(7)=5(7)2^+6 f(7)=5.49+6 f(7)= 251
f(4)=5(-4)²+6 => 5(-16)+6 => -80+6 => f(4)=-74
B) f(3)
f(3)=5(3)²+6 => 5(9)+6 => f(3)=51
C)f(4)
f(4)=5(4)²+6 => 5(16)+6 => f(4)=86
D)f(7)
f(7)=5(7)²+6 => 5(49)+6 => f(7)=251