Question

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Answer 1

Respostas:

a) x² - 7x = 0

x1 = 0 x2 = 7

b) 2x² - 5x + 3 = 0

x1 = 1 x2 = 3/2

c) - x² + 3x - 2 = 0

x1 = 1 x2 = 2

d) 9y² - 12y + 4 = 0

y = 2/3

e) 2x² - 7x + 7 = 0

x ∉ R

f) 4x² - 36 = 0

x1 = -3 x2 = 3