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9 July, 10:19

Answer to ths equatii; - 3x=81.

show the work.

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Answers (2)
  1. 9 July, 11:52
    0
    I found: 9 x2 + 54x + 81

    steps:

    Your square can be "translated" as:

    (3x+9) 2 = (3x+9) (3x+9) =

    multiplying we get:

    = (3x⋅3x) + (3x⋅9) + (9⋅3x) + (9⋅9) =

    =9 x2 + 27x+27x+81=

    and finally:

    =9 x2 + 54x + 81
  2. 9 July, 13:20
    0
    -3x = 81.

    Let's divide left and right by - 3 to isolate x.

    -3x/-3 = 81/-3

    Simplify:

    x = - 27
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