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melodylovesunicorns

  • one year ago

Solve the quadratic equation y2 - 5y = -4 by factoring

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  1. RyanL.
    • one year ago
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    add 4 to both sides first.

  2. abb0t
    • one year ago
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    add the 4 and set it equal to zero. So: \[y^2-5y+4=0\]

  3. abb0t
    • one year ago
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    You're next step is to find two numbers(a and b) when multiplied give you -5, but when added result in +4. Those two numbers will make up: \[(x \pm a )(x \pm b) \] where a and b are real numbers.

  4. RyanL.
    • one year ago
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    It's the other way around. When you multiply them you get +4 and when you add them you get -5

  5. melodylovesunicorns
    • one year ago
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    Thank you so much!

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