sexta-feira, 15 de maio de 2015

EQUAÇÃO DO 2° GRAU - 01 / 2015

01. Considere as equações do 2º grau, e determine suas raízes:

a) x2 – 2x – 3 = 0
b) – x2 + 2x + 1 = 0
c) x2 – 2x – 1 = 0
d) 4 x2 – x + 2 = 0
e) x2 – 5x + 6 = 0
f) – 2 x2 + 8x – 8 = 0
g) 3 x2 + x + 5 = 0
h) x2 – 6x + 8 = 0
i) – x2 – 4x + 12 = 0
j) – x2 + 6x – 9 = 0
k) x2 – 9x + 14 = 0
l) x2 – 3x + 2 = 0
m) x2 – x – 2 = 0
n) – 5x2 + 2x – 3 = 0

o) x2 – 3x + 4 = 0
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