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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

to start draw a sketch of this and label the sides

2. anonymous

|dw:1433573164078:dw|

3. anonymous

|dw:1433573279690:dw|

4. anonymous

|dw:1433573347052:dw|

5. anonymous

|dw:1433573382579:dw|

6. anonymous

can you find the area of this square here? do you understand how i got it?

7. anonymous

No that's why am asking for help ):

8. anonymous

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

please tell me which part you dont understand, i can help if you want

10. anonymous

finding the area

11. anonymous

ah ok, so we have this new square with each side being 5x - 2 inches

12. anonymous

to find the area of a square you take (side * side)

13. anonymous

|dw:1433573837577:dw|

14. anonymous

side times side

15. anonymous

so you can plug in the side to that equation to get this

16. anonymous

area = (5x - 2) * (5x - 2)

17. anonymous

do you know how to find (5x - 2) * (5x - 2)?

18. anonymous

yes

19. anonymous

ok perfect, just do that and you find the answer

20. anonymous

25x^2-20x+4

21. anonymous

yep, that is correct

22. anonymous

Thank

23. anonymous

yw

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