Evaluate 2x−2 for (a) x=−2 and (b) x=3. Write your answers in simplest form.

Question

Evaluate 2x−2 for (a) x=−2 and (b) x=3. Write your answers in simplest form.

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Khoii Minh 3 months 2021-08-15T07:39:53+00:00 1 Answers 0 views 0

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    2021-08-15T07:41:15+00:00

    (a) x = -2

    Plug in -2 for x in the equation:

    2(-2) – 2

    Note that when you multiply a negative number and a positive number, the product will be a negative. Also, remember to follow PEMDAS. First, multiply:

    2 * -2 = -4

    Next, subtract:

    -4 – 2 = -6

    When x = -2, your answer is -6.

    (b) x = 3

    Plug in 3 for x in the equation:

    2(3) – 2

    Remember to follow PEMDAS. First, multiply:

    2 * 3 = 6

    Next, subtract:

    6 – 2 = 4

    When x = 3, your answer is 4.

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )