factorize : ab (c^2 + d^2) - a^2*cd - b^2*cd
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Step-by-step explanation:
ab(c^2+d^2)-a^2cd-b^2cd
=abc^2 - a^2cd + abd^2 - b^2cd
=ac(bc-ad) + bd(ad-bc)
=ac(bc-ad) - bd(bc-ad)
=(bc-ad) (ac-bd)
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