Simplify fully (y+3)^2
Firstly expand the brackets to make (y+3)(y+3)Next I find it easy to remember that you don't times anything together that's in the same bracket when expanding. So - y x y = y^2y x 3 = 3y3 x y = 3y3 x 3 = 9So in total this is y^2 + 6y + 9
LC
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