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Solving Quadratics
Hard
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Question 25
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Markscheme
a.
Factorise
x2−4x−21x^2 - 4x - 21
x
2
−
4
x
−
21
[2]
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Markscheme
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3
Grade answer
b.
Solve
x2−4x−21=0x^2 - 4x - 21 = 0
x
2
−
4
x
−
21
=
0
[1]
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Markscheme
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3
Grade answer
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Solving Quadratics Questions
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