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Adi3

  • one year ago

will medal How to factor 15x^2 + x – 2

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  1. Adi3
    • one year ago
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    @ganeshie8

  2. Adi3
    • one year ago
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    @Duck.

  3. Adi3
    • one year ago
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    @Nnesha

  4. Adi3
    • one year ago
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    i nedd help please help

  5. Nnesha
    • one year ago
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    AC /headphone method find two numbers when you multiply them you should get product of AC and when you add or subtract them you should get middle term

  6. Nnesha
    • one year ago
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    Ax^2+Bx+C a=leading coefficient b=middle term c=constant term

  7. Adi3
    • one year ago
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    a = 15 b= x c = -2

  8. Adi3
    • one year ago
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    ac = -30 b = x

  9. Nnesha
    • one year ago
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    |dw:1441282946820:dw| multiply 15 times -2

  10. Nnesha
    • one year ago
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    b =1 we just need coefficients

  11. Adi3
    • one year ago
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    okay

  12. Nnesha
    • one year ago
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    so what two number would you multiply to get -30 but when you add or subtract them yo get 1

  13. Adi3
    • one year ago
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    5.6

  14. Nnesha
    • one year ago
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    yes right what about signs 5 times 6 =30 but we need negative 30 so which one should be negative 5 or 6 ?

  15. Adi3
    • one year ago
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    5

  16. Adi3
    • one year ago
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    -5

  17. Nnesha
    • one year ago
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    right so leading coefficient isnn't negative we should apply the grouping method |dw:1441283175163:dw| make a group of 2 terms

  18. Nnesha
    • one year ago
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    now find common factor of first and 2nd group look at the drawing what is common in blue box ?

  19. Adi3
    • one year ago
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    i get it (3x - 1) (5x + 2)

  20. Adi3
    • one year ago
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    thnxs for helping

  21. Nnesha
    • one year ago
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    hm np :=)

  22. Adi3
    • one year ago
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    ive me a medal

  23. Nnesha
    • one year ago
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    i've ? or give ?

  24. Adi3
    • one year ago
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    give

  25. Adi3
    • one year ago
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    tnxs

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