Equations

Ran through the 3 different types of GCSE equations

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The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5 Work out the area of the triangle.


From factorising a^2-b^2 hence or otherwise simplify fully (x^2 + 4)^2 - (x^2-2)^2


Solve ((x+2)/3x) + ((x-2)/2x) = 3


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