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16 January, 19:41

Find the missing factor. 5y^2+4y-1 = (5y-1) ()

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Answers (2)
  1. 16 January, 20:39
    0
    (y + 1)

    Step-by-step explanation:

    Given

    5y² + 4y - 1

    Consider the factors of the product of the y² term and the y - term which sum to give the coefficient of the y - term

    product = 5 * - 1 = - 5 and sum = + 4

    The factors are + 5 and - 1

    Use these factors to split the y - term

    5y² + 5y - y - 1 (factor the first/second and third/fourth terms)

    = 5y (y + 1) - 1 (y + 1) ← factor out (y + 1) from each term

    = (y + 1) (5y - 1)

    The missing factor is (y + 1)
  2. 16 January, 22:25
    0
    (5y-1) (y+1)
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