(a+b)(a-b)(asquare-ab+bsquare)(asquare+ab+bsquare)
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(a+b)(a-b)
=> a(a-b) + b(a-b)
=> a^2 - ab + ab - b^2
=> a^2 - b^2
HOPE IT HELPS YOU....
=> a(a-b) + b(a-b)
=> a^2 - ab + ab - b^2
=> a^2 - b^2
HOPE IT HELPS YOU....
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but what about the remaining sum
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