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anonymous

  • one year ago

Which of the following is a solution of x2 - 7x = -5?

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  1. pooja195
    • one year ago
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    Do the directions specify what method to use? Quadratic Formula ? Factoring?

  2. anonymous
    • one year ago
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    quadratic formula

  3. pooja195
    • one year ago
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    Ok can you put it into \[\huge~\rm~ax^2+bx+c=0 \] form?

  4. anonymous
    • one year ago
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    x^2 -7x+5=0 right?

  5. pooja195
    • one year ago
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    yes now list your abc values

  6. anonymous
    • one year ago
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    a=1 b=-7 c=5

  7. pooja195
    • one year ago
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    Good \[\huge~\rm~~x=\frac{ -(-7)~\pm \sqrt{(-7)^2-4(1)(5)} }{ 2(1) }\] \[\huge~\rm~~x=\frac{ 7)~\pm \sqrt{(-7)^2-4(1)(5)} }{ 2(1) }\] simplify

  8. anonymous
    • one year ago
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    a.7 plus or minus the square root of 69 divided by two b.7 plus or minus the square root of 29 divided by two. c.negative 7 plus or minus the square root of 29 divided by two d.negative 7 plus or minus the square root of 69 divided by two.

  9. anonymous
    • one year ago
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    these are the answers i have and my answer doesnt match any of them

  10. pooja195
    • one year ago
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    \[\huge~\rm~(−7)^2−4(1)(5)\] solve this part only

  11. anonymous
    • one year ago
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    i got \[\frac{ 7\pm \sqrt{25} }{ 2}\]

  12. anonymous
    • one year ago
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    ok now what?

  13. pooja195
    • one year ago
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    that should have been 29

  14. anonymous
    • one year ago
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    oh i got it i had to redo it and do it all together this time. so it would be \[\frac{ 7\pm \sqrt{29} }{ 2 }\]

  15. pooja195
    • one year ago
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    \[\huge~\rm~ \frac{ 7\pm \sqrt{29} }{ 2}\]

  16. pooja195
    • one year ago
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    yep :)

  17. anonymous
    • one year ago
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    thank you

  18. pooja195
    • one year ago
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    no problem :) \(\huge\color{orange}{Welcome~To~OpenStudy}\) Hey there!!! Since you are new here, read this legendary tutorial for new OpenStudiers!! http://goo.gl/5pp1u0 For an visual tutorial look at this! Its amazing :o https://prezi.com/fs3hqdpcopic/an-unofficial-guide-to-openstudy/ Also consider reading the CoC and the T&C http://openstudy.com/code-of-conduct http://openstudy.com/terms-and-conditions

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