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anonymous

  • one year ago

Help with this parabola, 3x^2 +4x+12

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  1. anonymous
    • one year ago
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    @Nnesha

  2. campbell_st
    • one year ago
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    well I can tell you its positive definite

  3. Nnesha
    • one year ago
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    statement ? factor ? solve for x ? graph ? write in vertex form? find vertex point ? what is axis sym ?

  4. anonymous
    • one year ago
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    I dont know how to find the zeros

  5. Nnesha
    • one year ago
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    alright zeros(solutions , x-intercept) you can use quadratic formula `OR` you can factor it

  6. Nnesha
    • one year ago
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    which one is easy for you ? factors or quadratic formula ?

  7. anonymous
    • one year ago
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    Factors

  8. Nnesha
    • one year ago
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    ohh well nvm you have to apply the quadratic formula \[\huge\rm x=\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\]

  9. Nnesha
    • one year ago
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    ax^2+bx+c quadratic equation where a=leading coefficient b=middle term c-constant term so what is a b and c in that equation ?

  10. Nnesha
    • one year ago
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    \(\huge\color{reD}{\rm b^2-4ac}\) `Discriminant` you can use this to find if the equation is factorable or not if ` b^2-4ac > 0` then there are 2 real zeros if ` b^2-4ac = 0` then there is one real root if ` b^2-4ac < 0` then you will get two complex roots (no -x-intercept)

  11. Nnesha
    • one year ago
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    zeros is another word they use for solutions and x-intercept

  12. LynFran
    • one year ago
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    can u show me how to write it in vertex form .. @Nnesha

  13. Nnesha
    • one year ago
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    complete the square y=a(x-h)^2+k ?

  14. LynFran
    • one year ago
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    o thats all lol... im now doing this ..thanks

  15. Nnesha
    • one year ago
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    i mean convert 3x^2 +4x+12 into y=a(x-h)^2+k <---(vertex form) b using completing the square method :=)

  16. LynFran
    • one year ago
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    i know what u meant thanks

  17. Nnesha
    • one year ago
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    np :)

  18. LynFran
    • one year ago
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    so it would be 3x^2+(4x/2)^2+......+12-..... (3x^2+4x+4)+12-4 (3x+2)^2+8 is this correct

  19. LynFran
    • one year ago
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    i think i did something wrong

  20. Nnesha
    • one year ago
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    okay you need to complete the square of (3x^2+4x) it would be great if you take out the 3

  21. Nnesha
    • one year ago
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    i've to go rn cya later

  22. LynFran
    • one year ago
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    ok

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