exam
Maths Puzzle
Numerical Ability
x^2-1/x divide x+1/x-1
= x^2/x+1 ?
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exam Other Question
is (sqrt x)^2= x an identitiy (true for all nonnegative values of x?
please expain
for the function, y=1/x-2, give the y values for x= -1,0,1,2,3,4
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2-|7x-4|=5