Find the product of 2/5p – q and q + 2/5p
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(2/5p-q)(2/5p+q)
Identity=(a+b)(a-b)=a^2+b^2
=(2/5p)^2-(q)^2
=4/25p^2-q^2
Identity=(a+b)(a-b)=a^2+b^2
=(2/5p)^2-(q)^2
=4/25p^2-q^2
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