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Factorise X^2-X-20

(X+4)(X-5)

Answered by Stephen W. • Maths tutor

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Solve the simultaneous equations x^2 + y^2 = 9 and x+ y = 2. Give your answer to 2.d.p

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Work out the value of 2a^2 + b^3 when a = 5 and b = –3

13/2 - 5/3 = ?

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