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12 January, 06:10

X-1=2

Work out the value of 2x squared

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Answers (2)
  1. 12 January, 06:40
    0
    Step-by-step explanation:

    x-1=2 therefore x is 3 so 2x squared is 36
  2. 12 January, 08:44
    0
    1.22474487139

    Step-by-step explanation:

    x = 3

    so if 2x^2 - 1 = 2

    add 1 to both equations

    2x^2 = 3

    next, divide 2 from both sides

    x^2 = 3/2

    x^2 = 1.5

    now find the square root of 1.5

    the answer is:

    1.22474487139
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