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anonymous

  • one year ago

Solve x2 + 4x − 12 = 0.

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  1. Nnesha
    • one year ago
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    there are 4+ method to factor quadratic equation for this question AC method (headphone) would easy where you have to find `2` numbers when you `multiply` them you should get product of `AC` and when you `add` or subtract them you should get `middle` term

  2. Nnesha
    • one year ago
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    \[\huge\rm Ax^2+Bx+C=0\] a=leading coefficient b=middle term c= constant term what is a and c in that eqaution ?

  3. Nnesha
    • one year ago
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    equation*

  4. anonymous
    • one year ago
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    x and -12 i think

  5. Nnesha
    • one year ago
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    nice leading coefficient is one \[\rm 1x^2+4x-12\] so what two number you should multiply to get -12 but when you add them you should get 4

  6. anonymous
    • one year ago
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    am not sure

  7. Nnesha
    • one year ago
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    1 times -12 = -12 right but 1-12 =-11 but we need 4 now what other number you can multiply to get -12 ?

  8. anonymous
    • one year ago
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    is it 2 and -6

  9. Nnesha
    • one year ago
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    2 should be negative cus we need POSITIVE 4 -2 times 6 =-12 6-2=4

  10. Nnesha
    • one year ago
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    so factors are (x + number )(x+number)

  11. anonymous
    • one year ago
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    so the answer is -2 and -6

  12. Nnesha
    • one year ago
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    no.

  13. Nnesha
    • one year ago
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    not negative 6

  14. Nnesha
    • one year ago
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    wait do you have to solve for x or find factors ?

  15. anonymous
    • one year ago
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    x

  16. anonymous
    • one year ago
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    so i was right

  17. Nnesha
    • one year ago
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    no. factors are (x+ first number)(x+2nd number) set it equal to zero remember one of them is negativve

  18. Nnesha
    • one year ago
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    (x+6)(x+(-2)) now solve for x

  19. Nnesha
    • one year ago
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    x+(-2)= 0 x= ?

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