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[null,null,"Find the roots of these quadratic equations by factorising"]
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["* indicates a question where there is a number that could be taken out as a common factor first.  At which stage to address this with any particular class is at the teacher's discretion!",null,2,"","x","²","+",3,"x","+",2,"=",0,"x","=","-1/1","and","x","=",-2,"(",1,"x","+",1,")","(","x","+",2,")","",22,"","a","²","+",8,"a","+",15,"=",0,"a","=","-5/1","and","a","=",-3,"(",1,"a","+",5,")","(","a","+",3,")",""]
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