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dotdotdog

  • 5 years ago

Find an equation that has -5 and 8 as solutions. Write your equation in standard form. For example, 4 and -3 are solutions to x^2-x-12=0.

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  1. ashwinram
    • 5 years ago
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    (x+5)(x-8) = 0 x = -5 is a solution (makes the first factor zero) x = 8 is a solution (makes the second factor zero)

  2. ashwinram
    • 5 years ago
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    now expand it to standard form

  3. captaintim0070196
    • 5 years ago
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    Another way to do this: Find the sum of the solutions. That is 3. Find the product of the solutions. That is - 40. Now, reverse the sign of the sum of the solutions. That is - 3. Then, your equation is \[x^{2} - 3x -40=0\]

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