anonymous
  • anonymous
completing the square x^2-3x-4=0
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
im so stuck!
anonymous
  • anonymous
\[x^{2}-3x-4=0
anonymous
  • anonymous
( x+(1/6) )^2-(145/36)

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anonymous
  • anonymous
add 4 to both sides x^2 - 3x = 4 divide the coefficient of the base 1 by 2, then square it, and add to both sides. -1.5^2 = 2.25 x^2 - 3x + 2.25 = 4 + 2.25 (x - 1.5)^2 = 4 + 2.25 (x - 1.5)^2 = 6.25 take the square root of both sides x - 1.5 = +/- SqRt(6.25) ______________ x - 1.5 = 2.5 x = 4 x - 1.5 = -2.5 x = 1
anonymous
  • anonymous
Thank you so much! Both of you big help!
anonymous
  • anonymous
(4)^2 - 3(4) - 4 = 0 16 - 12 - 4 = 0 0 = 0 (-1)^2 - 3(-1) - 4 = 0 1 + 3 - 4 = 0 0 = 0 x = (4, -1) CORRECTION I WROTE 1, THE ANSWER IS REALLY -1 (AND 4)

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