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1 Unit 1: Pure Mathematics A
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Question 100
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Markscheme
Solve the equation
22x+1−5(2x)−12=02^{2x+1}-5(2^x)-12=0
2
2
x
+
1
−
5
(
2
x
)
−
12
=
0
.
[5]
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1 Unit 1: Pure Mathematics A Questions
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1 Unit 1: Pure Mathematics A