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Yessenia Bashirian

Lvl 10
3y ago
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12y ago

The only factors of 25 are: 1, 5, and 25. None of those factors add up to 9, let alone add up to 9 and multiply to 25. If you were trying to solve for x in a quadratic equation, you may need to use the quadratic formula.

Assuming a = 1, b = 9, and c = 25 (x^2 + 9x + 25):

x = (-b +- sqrt(b^2 - 4ac)) / 2a

x = (-9 +- sqrt(9^2 - 4(1)(25)) / 2(1)

x = (-9 +- sqrt(81 - 100)) / 2

x = (-9 +- sqrt(-19)) / 2

Final Answer:

x = (-9 +- i*sqrt(19)) / 2

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Q: What two number multiply to 25 and add up to 9?
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