exam Maths Puzzle Numerical Ability

how do you do partial fraction decomposition?? Like on a problem such as: 1/(x^2+x)???

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exam Other Question

The length of a rectangle is 5cm more than 3 times the width. If the area of the rectangle is 92cm^2, find the dimensions of the rectangle to the nearest thousandth. hello, i need some help to simplify and reduce to lowest terms

1/(x+5y)-5/(x-5y)+3/(x^2-25y^2)