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Coded A number of pages will provide a simple code if the task on that page is completed successfully. Once all the codes have been completed, enter all your codes in the required spaces below and obtain a printable certificate as proof of completion. Note that it is probably quite easy for any "hacker" to obtain the certificate falsely.

D1: Multiplying out brackets	Expand (x+a)(x+b)
	Expand (x-a)(x+b)
D2: Factorising quadratics	Factorise x2+ax+b
	Factorise x2+ax-b
	Factorise the difference of two squares
	Solve quadratic equations by factorisation

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