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anonymous

  • one year ago

Solve x2 - 7x = -13

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  1. anonymous
    • one year ago
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    I'm really bad at Solving Quadratic Equations w/ 0 as the leading coefficient

  2. anonymous
    • one year ago
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    \[x ^{2}-7x=-13 ?\]

  3. anonymous
    • one year ago
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    yeah sorry i forgot to include the ^

  4. anonymous
    • one year ago
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    \[x ^{2}-7x+13=0\] 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

  5. anonymous
    • one year ago
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    so basically to solve these types of equations you just substitute and simplify with the quadratic formula?

  6. anonymous
    • one year ago
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    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

  7. anonymous
    • one year ago
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    There is another way, which is completing the square, but doing the quadratic formula is fine.

  8. anonymous
    • one year ago
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    Thank you soon much!

  9. anonymous
    • one year ago
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    soooo*

  10. anonymous
    • one year ago
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    jaja, you're welcome :)

  11. anonymous
    • one year ago
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    Hint: The answer has imaginary numbers. :)

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