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anonymous

  • one year ago

Medal & fan. Determine the solution set of (3x + 1)^2 - 100 = 0.

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  1. anonymous
    • one year ago
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    3x + 1 = 100 right?

  2. freckles
    • one year ago
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    Hey you might want to check your previous question. I think you were under the wrong impression what the answers were. well first add 100 on both sides (3x+1)^2=100 then take square root of both sides you nee to take square root of 10 and you should have a second equation 3x+1=10 or 3x+1=-10

  3. freckles
    • one year ago
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    (x+2)^2=36 gives the equations x+2=6 or x+2=-6 subtracting 2 on both sides gives x=6-2 or x=-6-2 which gives us x=4 or x=-8

  4. freckles
    • one year ago
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    8 is definitely not a solution because (8+2)^2=36 is totally false

  5. anonymous
    • one year ago
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    so its not (4, -8) @freckles

  6. freckles
    • one year ago
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    i just said it is x=4 or x=-8

  7. freckles
    • one year ago
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    I was disagreeing with ever gave you 8 as an answer

  8. anonymous
    • one year ago
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    oh myb i see now

  9. freckles
    • one year ago
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    as (8+2)^2=36 is false (-8+2)^2=36 is true (4+2)^2=36 is also true

  10. freckles
    • one year ago
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    anyways can you solve the two linear equations above

  11. freckles
    • one year ago
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    3x+1=10 or 3x+1=-10

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spraguer (Moderator)
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