Simplifying Algebraic Expressions

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We have to be able to simplify expressions of the formand We must be clear about the rules for indices and cancelling fractions.

The first one is simplified as follows:

The second expression factorises on the top and bottom:

is a common factor hence we can cancel it to give the answer:

We may also have to simplify by adding fraction which result in terms to cancel:

The numerator factorises and we can identify common factors in numerator and denominator.

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