August 2019 1 52 Report
Alguém me ajuda na equação de 2 grau?

a) 2x² + 10x = 0

b) x (x-3) -2 (x-3) = 6

c) 3x² = 27 = 0

d) 2 (2x² - 1) = x² = 7

e) 5x² + 20 = 0

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