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1 March, 01:08

Hiw do i completely factor 5x^2+36x+7=0

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Answers (2)
  1. 1 March, 01:24
    0
    There is a method I use called the x method, I can’t show it to you but I will do my best to explain it

    Basically, the factors of 5 and 7 must equal 36, so it’s kind of like cross multiplying

    5 X 1

    1 7

    Five times seven equals 35

    1 Times 1 equals 1

    35 + 1 = 36

    This is the answer:

    (5x+1) (x+7)
  2. 1 March, 02:45
    0
    You do 5 times 7 which equals 35. then you find factors of 35 that equal 36. 35x1=35 and 35 + 1 = 36. 5x^2 + 35x + 1x + 7 = 0 then you (5x^2 + 35x) (x + 7) and you can factor out a 5x out of the first one to get (x + 7) and the other stays (x + 7) and then you have (5x + 1) (x + 7) = 0 so you set each of them to zero and you get 5x + 1 = 0 which is x = - 1/5 and x + 7 = 0 which is x = - 7.
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