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Expand (2x + 5y)² by using …

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Expand (2x + 5y)² by using suitable identify

    • Posted by Vikas Singh 5 years, 9 months ago

    CBSE > Class 08 > Mathematics
    • 1 answers

    Yogita Ingle 5 years, 9 months ago

    (a + b)2 = a2 + 2ab + b2

    (2x + 5y)²  = (2x)2 + 2 (2x)(5y) + (5y)2

    = 4x2 + 20 xy + 25 y2

    1Thank You

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