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23 September, 10:52

Find the value of the expression: 2xy+2x^2 for x=-2.5 and y=-7.5

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Answers (2)
  1. 23 September, 11:15
    0
    50.5

    Step-by-step explanation:

    2xy+2x^2 And we know x=-2.5 and y=-7.5.

    In order of operations, exponents come first.

    x^2 = - 2.5 * - 2.5 = 6.5.

    6.5*2=13.

    2xy + 13

    2x=-5

    -5*-7.5 = 37.5

    37.5 + 13

    50.5
  2. 23 September, 14:42
    0
    2 (2.5) + 2 (7.5) + 2 (2.5) + 2

    5+9.5+5+2

    14.5+7

    21.5
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