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Multiple choice

If the equation $(a - 5) x^2 + 2(a - 10)x + a + 10 = 0$ has roots of opposite signs, then

  1. a > 10-

  2. -15 < a < 5

  3. -10 < a < 5

  4. none of these

Reveal answer Fill a bubble to check yourself
B Correct answer

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