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Factorize - (l+m)2- (l-m)2

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Factorize - (l+m)2- (l-m)2

    • Posted by Pratigya Kumari 4 years, 9 months ago

    CBSE > Class 08 > Mathematics
    • 1 answers

    Mahek Bansal 4 years, 9 months ago

    [ a²-b² = (a+b) × (a-b) ] =(l+m × l-m) (l+m - l-m) = 2l × 2m = 4lm

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