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Simplify : (7a + 5b)² + …

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Simplify : (7a + 5b)² + (5a + 7b)²

    • Posted by Vansh Sharawat 4 years, 6 months ago

    CBSE > Class 08 > Mathematics
    • 3 answers

    Nakshi Shah 4 years, 6 months ago

    (7a + 5b)² + (5a + 7b)² = (7a)2 + (5b)2 + 2(35ab) + (5a)2 + (7b)2 + 2(35ab) = 49a2 + 25b2 + 70ab + 25a2 + 49b2 + 70ab = 49a2 + 25a2 + 25b2 + 49b2 + 70ab + 70 ab = 74a2 + 74b2 + 140ab

    0Thank You

    Hardik Garg 4 years, 6 months ago

    7a + 5b)² + (5a + 7b)² = (7a)2 + (5b)2 + 2(35ab) + (5a)2 + (7b)2 + 2(35ab) = 49a2 + 25b2 + 70ab + 25a2 + 49b2 + 70ab = 49a2 + 25a2 + 25b2 + 49b2 + 70ab + 70 ab = 74a2 + 74b2 + 140ab

    0Thank You

    Yogita Ingle 4 years, 6 months ago

      (7a + 5b)² + (5a + 7b)²

    = (7a)2 + (5b)2 + 2(35ab) + (5a)2 + (7b)2 + 2(35ab)

    = 49a2 + 25b2 + 70ab + 25a2 + 49b2 + 70ab

    = 49a2 + 25a2 + 25b2 + 49b2 + 70ab + 70 ab

    = 74a2 + 74b2 + 140ab

    0Thank You

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