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anonymous

  • 5 years ago

looking for help finding factors that when multipied equal 430 but when added equal 76. Can anyone help?

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  1. anonymous
    • 5 years ago
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    Are you sure it isn't 420? If it is, it is 6 and 70

  2. anonymous
    • 5 years ago
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    no unfortunely it is 430.

  3. bahrom7893
    • 5 years ago
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    x*y = 430 x+y = 76

  4. bahrom7893
    • 5 years ago
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    x*y = 430 y = 76-x

  5. bahrom7893
    • 5 years ago
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    x*(76-x)=430 y = 76-x

  6. bahrom7893
    • 5 years ago
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    what do u mean factors? do u mean just 2 numbers?

  7. bahrom7893
    • 5 years ago
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    76x-x^2 = 430 y = 76-x

  8. anonymous
    • 5 years ago
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    like a . b = 430 and then a+b=76

  9. bahrom7893
    • 5 years ago
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    OMG this place crashes too much so: -x^2 +76x - 430 = 0

  10. bahrom7893
    • 5 years ago
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    let's see if discriminant works: D = 76^2 - 4 * (-1) * (-430) = 5776 - 1720 = 4056

  11. bahrom7893
    • 5 years ago
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    Uhmm.. r us sure the problem is right? Because radical D is 63.68673331, etc..

  12. bahrom7893
    • 5 years ago
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    i'm still thinking that blexting was right.. the question is supposed to have a 420.. Nobody in their right mind would assign a problem with decimals.. well unless ur dealin with physics

  13. anonymous
    • 5 years ago
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    ok maybe i went about this the wrong way. i am look for an answer for -2x squared+76x+ 430. supposed to factor by grouping i think. trying to figure it out might have messed u

  14. anonymous
    • 5 years ago
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    oops mean up*

  15. bahrom7893
    • 5 years ago
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    I think this way it makes sense.. and if u can't factor use quadratics. it's much easier

  16. bahrom7893
    • 5 years ago
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    -2x^2 + 76x + 430 = 0 by the way is it + 430 or - 430?

  17. bahrom7893
    • 5 years ago
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    D = 76^2 - 4 * (-2) * 430 = 5776 + 3440 = 9216

  18. bahrom7893
    • 5 years ago
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    x1 = (-76-sqrt(9216))/(2*(-2)) = (-76 - 96)/-4 = 43

  19. bahrom7893
    • 5 years ago
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    x2 = (-76+sqrt(9216))/(2*(-2)) = (-76 + 96)/-4 = 20/-4 = -5

  20. bahrom7893
    • 5 years ago
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    So to factor ur equation you would have: (x-43)(x+5)=0

  21. bahrom7893
    • 5 years ago
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    Please click on become a fan if I helped, I really want to get to the next level!! Thanks =)

  22. anonymous
    • 5 years ago
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    First of all if -2x^2 + 76x + 430 = 0 is the equation Then the first thing you do is to factor out the -2 (common factor) -2(x^2 - 38x - 215) = 0 Then you would be looking for factors of 215 that subtract to get 38 Which would be 43 and 5 So it would factor into -2(x - 43)(x + 5) = 0

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