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HonoursStudent

Hi , It doesnt seem like this can be solved to x : (3x+2)(4x+10)

  • one year ago
  • one year ago

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  1. mark_o.
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    are these equal to zero?

    • one year ago
  2. mark_o.
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    (3x+2)(4x+10) =0 ?

    • one year ago
  3. HonoursStudent
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    I end up with the following awnser 6x2 + 38x + 20 = 0 so nothing in c will multiply to the sum of b

    • one year ago
  4. HonoursStudent
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    In the book it is not equal to 0 it says evaluate the following (3x+2)(4x+10)

    • one year ago
  5. mark_o.
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    (3x+2)(4x+10) =12x^2 + 8x+30x+20 =12x^2 +38x +20 thats all you can do to it unless you want to find its root or zeros

    • one year ago
  6. HonoursStudent
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    ok o just simplified it more. wont affect any marks ?

    • one year ago
  7. HonoursStudent
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    woops i wrote it wrong 6x2+19x+10 = 0

    • one year ago
  8. HonoursStudent
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    so thats the most simplified awnser.

    • one year ago
  9. mark_o.
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    that ok, so if you want to equate them to zero, either you use the quadratic formula or the one already factored earlier w/c result x=-2/3,-5/2

    • one year ago
  10. HonoursStudent
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    ok so if i cant solve it ill have to use x = -b +_ square root b 2 - 4ac / 2a

    • one year ago
  11. mark_o.
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    no, only if the problem says determine its zero or roots by equating them to zero, also if you cant factor them anymore, then you can also use the quadratic formula .... try to solve it using the formula lets see what the zeroes

    • one year ago
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