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anonymous

  • 4 years ago

i need help factoring c^2 - 6cd + 9d^2 -4 Can you please write it out so i can see how it is done

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  1. jhonyy9
    • 4 years ago
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    c^2 - 2*c*3d +(3d)^2 so after this help i think that will be easy

  2. anonymous
    • 4 years ago
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    as difference of squares

  3. anonymous
    • 4 years ago
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    can u draw it out so i can understand it beter

  4. jhonyy9
    • 4 years ago
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    yes but firstly you need to make what i have wrote after this we can using (-4) to ending this exercise

  5. anonymous
    • 4 years ago
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    i dnt understand what u wrote out

  6. jhonyy9
    • 4 years ago
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    so for you can understanding better look this please a*a - 2*a*b +b*b = ???

  7. jhonyy9
    • 4 years ago
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    so firstly i like to make you learning this but if you wann i can solving it shortly

  8. anonymous
    • 4 years ago
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    Can u draw it out so i can get a visual

  9. jhonyy9
    • 4 years ago
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    how many is (a-b)^2 = ???

  10. jhonyy9
    • 4 years ago
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    so equal a^2 -2ab +b^2 = a*a -2ab +b*b yes ?

  11. anonymous
    • 4 years ago
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    yes i get that

  12. jhonyy9
    • 4 years ago
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    can you make it coresponding with what i have wrote there firstly ?

  13. anonymous
    • 4 years ago
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    no i dont get how to solve it thats why i am asking for someone to draw it on the board so i can get whats going on

  14. jhonyy9
    • 4 years ago
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    (c-3d)^2 -4 =

  15. jhonyy9
    • 4 years ago
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    this is clearly ?

  16. jhonyy9
    • 4 years ago
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    and now you can using the formula a^2 -b^2 =(a-b)(a+b)

  17. anonymous
    • 4 years ago
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    thats just it i dont know how to put it in the (a-b)(a+b) form

  18. jhonyy9
    • 4 years ago
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    so from c^2 -6cd +9d^2 we have got (c-3d)^2 what will be in this last point a and 4=2*2 so hence 2^2 will be b^2 and now you just need to put these inside formula

  19. jhonyy9
    • 4 years ago
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    ok ?

  20. jhonyy9
    • 4 years ago
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    (c-3d)^2 will be a^2

  21. jhonyy9
    • 4 years ago
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    than there we will get (c-3d)^2 -4=(c-3d-2)(c-3d+2)

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