anonymous
  • anonymous
Solve x2 - 7x = -13
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
I'm really bad at Solving Quadratic Equations w/ 0 as the leading coefficient
anonymous
  • anonymous
\[x ^{2}-7x=-13 ?\]
anonymous
  • anonymous
yeah sorry i forgot to include the ^

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anonymous
  • anonymous
\[x ^{2}-7x+13=0\] you can use the general solution \[x_{1}= \frac{ -b+\sqrt{b ^{2}-4ac} }{ 2a }\] \[x_{2}= \frac{ -b-\sqrt{b ^{2}-4ac} }{ 2a }\] where a=1 b=-7 c=13
anonymous
  • anonymous
so basically to solve these types of equations you just substitute and simplify with the quadratic formula?
anonymous
  • anonymous
It is the general method for quadratic equations (works for all the quadratic equations .. but there are some equations where you could do other methods to factoring
anonymous
  • anonymous
There is another way, which is completing the square, but doing the quadratic formula is fine.
anonymous
  • anonymous
Thank you soon much!
anonymous
  • anonymous
soooo*
anonymous
  • anonymous
jaja, you're welcome :)
anonymous
  • anonymous
Hint: The answer has imaginary numbers. :)

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