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Factorise X^2-X-20

(X+4)(X-5)

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Answered by Stephen W. • Maths tutor

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FIRSTLY: John has a slice of pizza in the exact shape of an isosceles triangle. 2 sides measure Y + 5 and 1 side measures Y – 2. Write an expression for the total perimeter. SECONDLY: Multiply out the following brackets: (3Y + 8)(3Y + 2)

Solve the simultaneous equations 1) 3x + 2y = 4 & 2) 4x + 5y = 17

Solve algebraically the simultaneous equations, giving your answers in terms of b : 3x+by=5, x-y=-2

If a rectangle has length (x-4), width (x-5) and area 12 then what is the value of x?

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