(y2)2 – 10y2 + 9 = 10x + 9 = 0 a = 1 b = -10 c = 9 ∆ = b2 – 4ac ∆ = (-10)2 – 4 . 1 . 9 ∆ = 100 – 36 ∆ = 64 x = - b ± √∆ 2a x = -(-10) ± √64 2 . 1 x = 10 ± 8 2 x’ = 9 x” = 1

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Jonatas Nascimento 3 questions

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12x²(²)6x+36=0
1. ATrue
2. BFalse
21+1=2
1. ATrue
2. BFalse
3y4 – 10y² + 9 = 0
1. A(y2)2 – 10y2 + 9 =
  10x + 9 = 0
  
  a = 1 b = -10 c = 9
  
  ∆ = b2 – 4ac
  ∆ = (-10)2 – 4 . 1 . 9
  ∆ = 100 – 36
  ∆ = 64
  
  x = - b ± √∆
  2a
  
  x = -(-10) ± √64
  2 . 1
  
  x = 10 ± 8
  2
  
  x’ = 9
  
  x” = 1
2. B1111

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Description: para escola
Author: Jonatas Nascimento
Language: Português
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Questions in this quiz (3)

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