Question

me ajudem por favoooor​

Answer 1

x² - 5x - 6 = 0

a = 1

b = - 5

c = - 6

∆ = b² - 4 . a . c

∆ = (-5)² - 4 . 1 . (-6)

∆ = 25 + 24

∆ = 49

x = - b ± √∆

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2a

x' = - (-5) - 7

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2 . 1

x' = 5 - 7

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2

x' = - 2

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2

x' = - 1

x" = - (-5) + 7

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2 . 1

x" = 5 + 7

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2

x" = 12

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2

x" = 6

S = {-1 , 6}