Question

x sobre 2-2+1=0......

Answer 1

x² - 2x + 1 = 0

bhaskara
b² - 4ac
-2² -4.1.1
4 - 4
0 = delta

x = -b +/- √Δ / 2a
x = -(-2) +/- √0 / 2.1
x = 2 +/- 0 / 2
x = 1 +/- 0

x' = 1 + 0 = 1
x'' = 1 - 0 = 1

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