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Quadratic Formula
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Question 19
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Markscheme
Solve
z2+8z−4=0z^2 + 8z - 4 = 0
z
2
+
8
z
−
4
=
0
Give your answers in the form
a±bca \pm b\sqrt{c}
a
±
b
c
.
[4]
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Quadratic Formula Questions
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