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1.2 Algebra and Functions
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Question 3
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Markscheme
a.
Solve the inequality
x2+8x>20 x^2 + 8x > 20
x
2
+
8
x
>
20
[3]
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3
Grade answer
b.
Find the set of values for
x x\,
x
which satisfy both of the inequalities
x2+8x>20 x^2 + 8x > 20
x
2
+
8
x
>
20
18+3x<23+x 18 + 3x < 23 + x
18
+
3
x
<
23
+
x
[1]
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Markscheme
Ask Genie
3
Grade answer
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1.2 Algebra and Functions Questions
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1.2 Algebra and Functions
