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AgathaGoncalves5
@AgathaGoncalves5
January 2020
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GENTE ME AJUDA A FAZER A QUESTÃO 15,QUERO UMA EXPLICAÇÃO FÁCIL DE ENTENDER!!!
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IgorLM
F(x) = -x² +19x -60
Vc deve usar a fórmula de bhaskara
-b +-√b² -4*a*c
--------------------- =
2*a
-19 +-√19² -4*-1*-60
--------------------- =
2*-1
-19 +-√361 -240
--------------------- =
-2
-19 +-√121
----------------- =
-2
-19 +-11
------------ =
-2
-19 + 11 -8
X1 = ------------ = --------- = 4
-2 -2
-19 - 11 -30
X2= ----------- = ------------- = 15 <<< Resposta
-2 -2
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Vc deve usar a fórmula de bhaskara
-b +-√b² -4*a*c
--------------------- =
2*a
-19 +-√19² -4*-1*-60
--------------------- =
2*-1
-19 +-√361 -240
--------------------- =
-2
-19 +-√121
----------------- =
-2
-19 +-11
------------ =
-2
-19 + 11 -8
X1 = ------------ = --------- = 4
-2 -2
-19 - 11 -30
X2= ----------- = ------------- = 15 <<< Resposta
-2 -2