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@Hey
April 2020
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Quanto é -2x² -6 +56=0?
com resolução, please *-*
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savanna
Verified answer
Olá.
-2x²-6+56=0
-2x²=-50
x²= -50/-2
x²= 25
x = + - √25
x= +5,-5
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eluciamonteiro
Verified answer
-2x² -6 +56=0 .(-1)
2x
² +6 -56 = 0
2x² -50 = 0 ÷2
x² -25 = 0
x² = +25
x = ± √25
x =
± 5
S{-5 ; +5}
0 votes
Thanks 0
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Lista de comentários
Verified answer
Olá.-2x²-6+56=0
-2x²=-50
x²= -50/-2
x²= 25
x = + - √25
x= +5,-5
Verified answer
-2x² -6 +56=0 .(-1)2x² +6 -56 = 0
2x² -50 = 0 ÷2
x² -25 = 0
x² = +25
x = ± √25
x = ± 5
S{-5 ; +5}