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anonymous

  • 5 years ago

15n^2-n-28 factored with work

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  1. amistre64
    • 5 years ago
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    n- /15 ; n+ /15 15(28) = 240+320+50 = 700

  2. amistre64
    • 5 years ago
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    1,700; 2,350; 4,125; 5,120, 10; 60, 20; 30 will work

  3. amistre64
    • 5 years ago
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    30 and 20 will not work; thats 10 not 1 lol n- 30/15 ; n+ 20/15 n- 2 ; n+ 4/3 n- 2 ; 3n+ 4

  4. amistre64
    • 5 years ago
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    14,50; 28,25..soo close

  5. amistre64
    • 5 years ago
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    n(n+1) = 700 n^2 +n -700 n= -1/5 +- sqrt(2801)/2

  6. anonymous
    • 5 years ago
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    so then what is it when factored out

  7. amistre64
    • 5 years ago
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    trying to ge to that, doesnt seem to work...did you miss a number like 3 perhaps?

  8. amistre64
    • 5 years ago
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    that middle terms looks to be missing a number to it

  9. anonymous
    • 5 years ago
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    no thats exactly how it is on my worksheet

  10. amistre64
    • 5 years ago
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    420...it helps if i know how to multiply lol..... back on track lol

  11. amistre64
    • 5 years ago
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    10,42; 20, 21 thats it lol

  12. amistre64
    • 5 years ago
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    n- 21/15 ; n+ 20/15 n- 7/5 ; n+ 4/3 5n- 7 ; 3n+ 4

  13. amistre64
    • 5 years ago
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    my georgia math got befuddled ;)

  14. anonymous
    • 5 years ago
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    lol that happens to me alot i was thinking for a second i would get some bonus points for bringing a mistake to the teachers attention lol

  15. amistre64
    • 5 years ago
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    15 28 ---- 240 160 50 ---- 450 ....im 30 off, why?

  16. anonymous
    • 5 years ago
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    hmm im not to sure why

  17. dumbcow
    • 5 years ago
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    20*15 = 300 8*10=80 8*5=40 sum =420

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