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Problem
Categorisation:
Solve a quadratic equation in the form
x
2
+
b
x
+
c
=
0
x^2 + bx + c = 0
x
2
+
b
x
+
c
=
0
. [Edexcel GCSE June2006-3I Q22b, June2006-5H Q10b] Solve
x
2
+
6
x
+
8
=
0
x^2 + 6x + 8 = 0
x
2
+
6
x
+
8
=
0
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