Question

1-Resolva as seguintes equações do 2º grau:
a) x2 - 9x + 20 =0
b) x2 - 7x + 10 =0
c) x2 - 9x + 18 =0
d) x² + 2x - 24 =0
e) x2 + 4x + 3 =0
f) x2 +5x - 14 =0
g) x2 + 3x + 2 =0​

Answer 1

a) x2 - 9x + 20 =15

b) x2 - 7x + 10 =25

c) x2 - 9x + 18 =25

d) x² + 2x - 24 =16

e) x2 + 4x + 3 = 46

f) x2 +5x - 14 =98

g) x2 + 3x + 2 =12