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What is the sum of the squares of the roots of the equation x^2+2 x-143=0 ?

Options

  1. A170
  2. B180
  3. C190
  4. D290

Correct answer

D. 290

Step-by-step solution

If roots , then aligned + & =-2 & =-143 ^2+ ^2 & =( + )^2-2 & =(-2)^2-2(-143) & =4+286=290 . aligned

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