anonymous
  • anonymous
solve the equation by factoring x^2-x=42
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
first, make the equation equal to zero bu subtracting 42 from both sides. then figure out what prime numbers make up the number 42 (2, 3, 7). Since 2*3=6, and that is 1 away from 7, you will likely have 6 and 7 as the two values that you factor
anonymous
  • anonymous
x=7 or x=-6
anonymous
  • anonymous
or you could simply use the quadratic formula \[1 \pm \sqrt{1-4(1)(-42)}\] divided by 2(1)

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anonymous
  • anonymous
thanks :)
anonymous
  • anonymous
yr welcm

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