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27 October, 23:57

2x2 + 8x = 10 is equivalent to which of the following?

A. (x + 2) ²=9

B. (2x + 4) ² = 10

C. (x + 4) ² = 10

D. (x + 8) ² = 18

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Answers (1)
  1. 28 October, 03:09
    0
    A. (x + 2) ²=9

    Step-by-step explanation:

    2x2 + 8x = 10 equivalent to:

    x²+4x = 5 ... (divid by2)

    (x²+4x+4) - 4=5

    (x + 2) ² - 4 = 5

    (x + 2) ² = 9 ... (add 4)
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