Question

Determine as raizes das equacoes ײ+2×-8=0

Answer 1

Resposta:

x² + 2x -8 = 0

a = 1 b = 2 c = -8

∆ = 2²-4.1.(-8)

∆ = 4+32

∆ = 36

√∆ = 6

x' = -2 + 6 = 4÷2= 2

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 2.1

x'' = -2 -6 = -8÷2 = -4

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 2.1

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