exam
Maths Puzzle
Numerical Ability
the length of a rectangular playing field is 5ft less than twice its width. If the perimeter of the playing field is 230ft, find the length and width on the field.
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exam Other Question
I need to factor completly
x^8-1
and
y^3+125
how can i write(a number decreased by the sum of the number and four) as an alg exp and how then do i simplify it?