What is algebra and why do we use it?

Algebra is a part of mathematics in which letters or symbols are used to represent either a known constant or an unknown value. Algebra is often used within formulae in which we can extrapolate an answer, an example being the 'Quadratic Equation'.

Related Maths GCSE answers

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factorise x^2 - x - 6


25* 3/2


A perfect sphere of lead has radius 6 cm, and weighs 1710 grams. What is its density? Give your answer in g/cm^3. [Density = mass/volume]


differentiate x^3(1+x)^5 with respect for x


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