(3x+5)-(3x-5) with identies
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I think it will be (3x+5)^2 - (3x-5)^2 then the identity is a^2-b^2 = (a+b) (a-b)
=> (3x+5+3x-5) ( 3x+5-3x+5) = (6x) (10) = 60x
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