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What rules should I look out for when manipulating expressions?

FactoriseFactorise FullyExpandSimplifyExpand and Simplify

Answered by Mayowa O. • Maths tutor

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Factorize x^2-x-20

Solve by factorisation. 2x(^2)+5x-12=0

A shape consists of a quarter circle (radius r = 4cm) attached to a triangle (side length = 4cm and hypotenuse = 5cm). This shape is surrounded by a square (side length 8cm). If the shape is coloured in, what is the area in the square that is uncoloured?

Simplify: 5x + 8y - 3x + 9y

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