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College pre-algebra

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how do I simplify the following expressions and show my work? 6+5[(12 div. by2)+5]. (4div.by2)+8(5-3)to the second power. -8-72Div.by9x4to the second power + 11.

  • College pre-algebra - ,

    Start by changing "12 div. by 2" to 6 and
    "8(5-3)to the second power" to 8*(2^2) = 32.

    72Div.by9 x 4 to the second power =
    8 x (4^2) = 8 x 16 = 128

    You should be able to take it from there. Learn to use symbols instead of words when writing math expressions.

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