hard · Enhanced ACT Mathematics
If u = ((1)/(x)), which quadratic equation is equivalent to ((2)/(x^2)) - ((7)/(x)) + 5 = 0?
- 2u^2 - 7u + 5 = 0
- 5u^2 - 7u + 2 = 0
- 2u - 7u^2 + 5 = 0
- u^2 - 7u + 10 = 0
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