Question

equacao de 2 grau ? 5x² + x - 2 = 0

Answer 1

5x² + x= 0

x.(5x + 1) = 0

x = 0

(5x + 1) = 0

5x + 1 = 0

5x = - 1

x = - 1/5

S[-1/5 ; 0]

Answer 2

a=5 b=1 c=-2

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Espero ter ajudado ;)