factorise x^2-y^2/144
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x^2 - y^2/144
= ((x + y)*(x - y))/144
= ((x + y)*(x - y))/12*12
= (((x + y)/12)*((x - y)/12)) ——> Answer
= ((x + y)*(x - y))/144
= ((x + y)*(x - y))/12*12
= (((x + y)/12)*((x - y)/12)) ——> Answer
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