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26 December, 16:13

Find the product of (2x + 5y) 2.

4x2 + 20xy + 25y2

4x2 - 20xy + 25y2

4x2 - 25y2

4x2 + 25y2

Answers (2)
  1. 26 December, 16:22
    0
    4x2 + 20xy + 25y2
  2. 26 December, 16:42
    0
    correct answer is option A

    Step-by-step explanation:

    given,

    (2 x + 5 y) ² ... (1)

    using identity of

    (a + b) ² = a² + b² + 2 a b

    using identity in equation (1)

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

    (2 x + 5 y) ² = 4 x² + 25 y² + 20 x y

    hence on solving the equation by using identity we get

    (2 x + 5 y) ² = 4 x² + 25 y² + 20 x y

    so, the correct answer is option A
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