Factorise X^2-X-20

(X+4)(X-5)

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Answered by Stephen W. Maths tutor

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Solve the following simultaneous equations: x^2 + 2y = 9, y = x + 3


Find the values of x and y when 3x+4y=18 and 4x+2y=14


How do I expand (x - 4)(2x + 3y)^2 ?


Solve x^2 + 5x -14 = 0


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