Question 721417
simplify [(3x+2)+5y][(3x+2)-5y]
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It's the product of sum and difference.
{{{(a+b)*(a-b) = a^2 - b^2}}}
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[(3x+2)+5y][(3x+2)-5y] = {{{(3x+2)^2 - (5y)^2}}}
You can expand that, or not.