Question

Aplicando a formula ( b² - 4.a.c ), calcule o valor do delta da equação: X² - 10x + 16 = 0.

Answer 1

x² - 10x + 16 = 0

a = 1

b = - 10

c = 16

∆ = b² - 4 . a . c

∆ = (-10)² - 4 . 1 . 16

∆ = 100 - 64

∆ = 36

x = - b ± √∆

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2a

x' = -(-10) - 6

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2 . 1

x' = 10 - 6

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2

x' = 4

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2

x' = 2

x" = -(-10) + 6

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2 . 1

x" = 10 + 6

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2

x" = 16

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2

x" = 8