book Maths Puzzle Numerical Ability

In x^4 (x-3)^5/
(x+2)^2

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book Other Question

Let f= 1 2 3 4 5
2 3 1 5 4

and

g= 1 2 3 4 5
3 4 2 5 1.

What is f inverse -1?
Write fog as a product of disjoint cycles.Is fog even?why? what is
1. 2(3x-5)+2(60)= 180
2. Find the area of a rectangluar tennis court if the perimeter is 480 feet. the length of the court is six feet more than twice the width.

i dont understand please help!!!