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Evaluate using identity 91 ✖ 89

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Evaluate using identity 91 ✖ 89

    • Posted by Twinkle Nagpal 7 years ago

    CBSE > Class 08 > Mathematics
    • 1 answers

    Twinkle Nagpal 7 years ago

    (90+1)(90-1) 90 raise to power2 -1 raise to power2 8100-1 8099

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