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anonymous

  • 5 years ago

do with the quadratic formula or equation. x^2 + 4x + 4 = 7????

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  1. radar
    • 5 years ago
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    That sets up nicely for factoring

  2. anonymous
    • 5 years ago
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    I would always try to factor first just because its faster personaly i only use the quadratic if I have to

  3. anonymous
    • 5 years ago
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    my teacher told me to put it into a=1 b=4 c= - 3 form or something and then put it into the equation (i know what the equation is im just stuck)

  4. anonymous
    • 5 years ago
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    ok then it sounds like you are going to have to do it with the quadratic.

  5. radar
    • 5 years ago
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    I agree, I didn't see the 7

  6. anonymous
    • 5 years ago
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    subtract both sides by 7 then you get x^2=4x-3 a=1 b=4 c =-3 use qaud eq x=(-b+/-sqrt(b^2-4ac))/(2a)

  7. anonymous
    • 5 years ago
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    i keep coming up with -2 + or - radical 7

  8. anonymous
    • 5 years ago
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    is that wrong or right im confused

  9. radar
    • 5 years ago
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    That looks like it would do it.

  10. anonymous
    • 5 years ago
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    did you apply the formula correctly? If you did, you should get the right answer.

  11. anonymous
    • 5 years ago
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    o okay thank u so much!

  12. anonymous
    • 5 years ago
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    should get (-4+sqrt28)/2 and (-4-sqrt28)/2

  13. radar
    • 5 years ago
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    \[-2\pm \sqrt{7}\]

  14. anonymous
    • 5 years ago
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    i got what radar said. not eric8 ahh which one is right

  15. radar
    • 5 years ago
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    I think EricC8 can be simplified for example the 28 is 7 x 4 and the sq root of 4 could be taken out of the radical

  16. anonymous
    • 5 years ago
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    o okay thank u so much!

  17. radar
    • 5 years ago
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    then the denominator 2 could be divided into each term

  18. anonymous
    • 5 years ago
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    oh i see what you mean

  19. radar
    • 5 years ago
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    By Jove I believe you've got it!

  20. anonymous
    • 5 years ago
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    haha thank u so much now ill be able to get an a+ on the test (:

  21. radar
    • 5 years ago
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    Hope so, good luck on the test.

  22. anonymous
    • 5 years ago
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    thanks

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spraguer (Moderator)
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