exam
Maths Puzzle
Numerical Ability
How many diagonal lines are there in a 130-sided polygon?
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exam Other Question
hi i really dont understand what to do for this equation please help me out. thanks i apreciate it.
(16x) over (25x^2-5) times ( 2x^2-x-1) over(8x)
oops wrte the equation worng. Please help me solve usine the elimintation method
5r-6s=13 6r+5s=40