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CorsoGod
20.04.2020 •
Mathematics
The scores of a dart game are 46, 25, 33, 56, 31, 46, 49, 55, a, b, and c. If 33 is the only mode, 46 is the median, and a>c, what is the possible range of values for a?
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Ответ:
I'd would do the FOIL method and then distribute the 2. But you can also distribute first. Either way, they want you to expand it.
(x - 4)(x + 1) = x(x) + x(1) - 4(x) - 4(1)
Simplify
x² + 1x - 4x - 4
Combine like terms:
x² - 3x - 4
Now, bring back that 2 to distribute.
2(x² - 3x - 4) = 2(x²) + 2(- 3x) + 2(- 4)
f(x) = 2x² - 6x - 8