anonymous
  • anonymous
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
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
to start draw a sketch of this and label the sides
anonymous
  • anonymous
|dw:1433573164078:dw|
anonymous
  • anonymous
|dw:1433573279690:dw|

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anonymous
  • anonymous
|dw:1433573347052:dw|
anonymous
  • anonymous
|dw:1433573382579:dw|
anonymous
  • anonymous
can you find the area of this square here? do you understand how i got it?
anonymous
  • anonymous
No that's why am asking for help ):
anonymous
  • anonymous
which part dont you get? how to find the area of the new square or how to find the new square? or both?
anonymous
  • anonymous
please tell me which part you dont understand, i can help if you want
anonymous
  • anonymous
finding the area
anonymous
  • anonymous
ah ok, so we have this new square with each side being 5x - 2 inches
anonymous
  • anonymous
to find the area of a square you take (side * side)
anonymous
  • anonymous
|dw:1433573837577:dw|
anonymous
  • anonymous
side times side
anonymous
  • anonymous
so you can plug in the side to that equation to get this
anonymous
  • anonymous
area = (5x - 2) * (5x - 2)
anonymous
  • anonymous
do you know how to find (5x - 2) * (5x - 2)?
anonymous
  • anonymous
yes
anonymous
  • anonymous
ok perfect, just do that and you find the answer
anonymous
  • anonymous
25x^2-20x+4
anonymous
  • anonymous
yep, that is correct
anonymous
  • anonymous
Thank
anonymous
  • anonymous
yw

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