anonymous
  • anonymous
Medal & fan. Determine the solution set of (3x + 1)^2 - 100 = 0.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
3x + 1 = 100 right?
freckles
  • freckles
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
freckles
  • freckles
(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

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freckles
  • freckles
8 is definitely not a solution because (8+2)^2=36 is totally false
anonymous
  • anonymous
so its not (4, -8) @freckles
freckles
  • freckles
i just said it is x=4 or x=-8
freckles
  • freckles
I was disagreeing with ever gave you 8 as an answer
anonymous
  • anonymous
oh myb i see now
freckles
  • freckles
as (8+2)^2=36 is false (-8+2)^2=36 is true (4+2)^2=36 is also true
freckles
  • freckles
anyways can you solve the two linear equations above
freckles
  • freckles
3x+1=10 or 3x+1=-10

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