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Are a2 – b2 and a2 + b2factors of a  b?
I'm thinking the first one is because of the subtraction, but I'm not sure, welcome to any ideas if you're not sure, just need a start on this, and if you don’t know, possibly the term for this type of problem so I can look in my book for it. How do you factor the expression below, can you also show how it is worked out
x2  5x + 6 
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