Question

5x²+22x-64=0 cómo se calcula

Answer 1

oii bom dia

Resposta: x₁ = - 32/5 , x₂ = 2

5x² + 22x - 64 = 0

= 5x² + 32x - 10x - 64 = 0

= x × ( 5x + 32 ) - 2 ( 5x + 32 ) = 0

= ( 5x + 32 ) × ( x - 2 ) = 0

= 5x - 32 = 0 , x - 2 = 0

= x = - 32/5 , x = 2

= x₁ = - 32/5 , x₂ = 2

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Espero ter ajudado!!

Bons estudos!!

Answer 2

Explicação passo-a-passo:

5x²+22x-64=0 Delta = b² - 4×a×c

| | | Delta = 22² - 4×5×(-64)

a b c Delta = 484 + 1280

Delta = 1764

X = - b +- Raiz Quadrada de Delta ( 1764)

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2×a

X = - 22 +- 42

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10

X¹ = - 22 + 42 X² = - 22 - 42

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10 10

X¹ = 20 X² = - 64

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10 10

X¹ = 2 X² = - 6,4