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Maths Puzzle
Numerical Ability
the number which best completes the sequence 39 9 4 5 25 20 21 441?
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book Other Question
Could you please help me solve this question that's been bugging me for ages:
On the same set of axes, graph the following showing all workings:
a. x is less than or equal t
Can you help?
(x+1)(3x-4)-(x-1) Simplify
I got x^2+3x-4, is this right?