1) Factorise into single brackets: 7y2-21y a) 7(y2-3y) b) 7y(y-3) c) y(72-21) d) y2(7-21) 2) Difference of two squares: x2-25 a) (x+5)(x-5) b) (x+5)(x+5) c) (x-5)(x-5) d) (x-5)(-x+5) 3) Factorising monic quadratics : x2+6x+8 a) (x2-4)(x+3) b) (x+2)(x-4) c) (x-2)(x-4) d) (x+2)(x+4) 4) Factorising non-monic quadratics : 6x2-5x-4 a) (2x+1)(3x-4) b) (x+1)(5x+4) 5) Solving quadratic equations: x2+6x+8=0 a) x=-2 x=4 b) x=-2 x=-4 c) x=4 x=3 d) x=-4 x=-3

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