Question

x2+3x-6=-8 na fórmula de bhaskara​

Answer 1

x² + 3x - 6 = - 8

x² + 3x - 6 + 8

x² + 3x + 2 = 0

a = 1

b = 3

c = 2

∆ = b² - 4 . a . c

∆ = 3² - 4 . 1 . 2

∆ = 9 - 8

∆ = 1

x = - b ± √∆

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2a

x' = - 3 - 1

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2 . 1

x' = - 4

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2

x' = - 2

x" = - 3 + 1

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2 . 1

x" = - 2

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2

x" = - 1

S = {-2 , -1}