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24 July, 16:34

What is the expression in factored form?

25x^2 - 49

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Answers (1)
  1. 24 July, 17:06
    0
    25x^2 - 49 = (5x-7) (5x+7)

    Step-by-step explanation:

    Given the expression is 25x^2 - 49.

    We can compare the given problem with "Difference of square formula" i. e. a^2 - b^2 = (a-b) (a+b).

    We have 25x^2 - 49.

    25x^2 - 49 = (5x) ^2 - (7) ^2

    25x^2 - 49 = (5x-7) (5x+7)

    Hence, the factored form is 25x^2 - 49 = (5x-7) (5x+7).
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