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anonymous

  • one year ago

HELP!! Kelly was given a square piece of material whose dimensions were 5x inches by 5x inches. She felt that it was a little too big for the project she was working on, so she cut 1 inch off each side of the square. Which of the following expressions represents the area of the remaining piece of material, in square inches A. 25x^2+20x+4 B. 25x^2-4 C. 25x^2+20x-4 D. 25x^2-20x+4

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  1. anonymous
    • one year ago
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    to start draw a sketch of this and label the sides

  2. anonymous
    • one year ago
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    |dw:1433573164078:dw|

  3. anonymous
    • one year ago
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    |dw:1433573279690:dw|

  4. anonymous
    • one year ago
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    |dw:1433573347052:dw|

  5. anonymous
    • one year ago
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    |dw:1433573382579:dw|

  6. anonymous
    • one year ago
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    can you find the area of this square here? do you understand how i got it?

  7. anonymous
    • one year ago
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    No that's why am asking for help ):

  8. anonymous
    • one year ago
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    which part dont you get? how to find the area of the new square or how to find the new square? or both?

  9. anonymous
    • one year ago
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    please tell me which part you dont understand, i can help if you want

  10. anonymous
    • one year ago
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    finding the area

  11. anonymous
    • one year ago
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    ah ok, so we have this new square with each side being 5x - 2 inches

  12. anonymous
    • one year ago
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    to find the area of a square you take (side * side)

  13. anonymous
    • one year ago
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    |dw:1433573837577:dw|

  14. anonymous
    • one year ago
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    side times side

  15. anonymous
    • one year ago
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    so you can plug in the side to that equation to get this

  16. anonymous
    • one year ago
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    area = (5x - 2) * (5x - 2)

  17. anonymous
    • one year ago
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    do you know how to find (5x - 2) * (5x - 2)?

  18. anonymous
    • one year ago
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    yes

  19. anonymous
    • one year ago
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    ok perfect, just do that and you find the answer

  20. anonymous
    • one year ago
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    25x^2-20x+4

  21. anonymous
    • one year ago
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    yep, that is correct

  22. anonymous
    • one year ago
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    Thank

  23. anonymous
    • one year ago
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    yw

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spraguer (Moderator)
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