Question

6) Resolva as equações.
a) x2 + 14x
b) x2 - 6x
C) x² + 12x
d) x2 – 5x​

Answer 1

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A)

x² + 14x = 0

x(x + 14) = 0

x¹ = -14

x² = 0

S = { 0 ; -14 }

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B)

x² - 6x = 0

x(x - 6) = 0

x¹ = 0

x² = 6

S = { 0 ; 6 }

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C)

x² + 12x = 0

x(x + 12) = 0

x¹ = 0

x² = -12

S = { 0 ; -12 }

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D)

x² - 5x = 0

x(x - 5) = 0

x¹ = 0

x² = 5

S = { 0 ; 5 }

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Att: MarcosPCV