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Maths Puzzle
Numerical Ability
(1) simplify: ( sqrt 7 + sqrt 2) (sqrt 7 - 3 sqrt 2)
(2) simplify: sqrt 72 x^5 y^7
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Dear Tutor,
How do you write an equation that shows the relationship between two numbers?
Thank you
this one I have tryed to work over and over just cant seem to get it
3 + 2 = 5
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x-1 x+1 x^2-1