exam Maths Puzzle Numerical Ability

r^2-5r+6
------------ =?
r^2-4

this problem needs to be reduced completely.

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exam Other Question

Graph the inequality and mark solutions, if any for the set:

1. y is greater than or equal to 1/2X and y is less than or equal to 3X
Solve for n: L=a+(n-1)d

Thanks!