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For the equation x² + x − 2 = 0, the solution set in roster form is:

A{−1, 2}
B{−1, −2}
C{1, −2}
D{1, 2}
Answer & Solution
Correct answer: C. {1, −2}
x² + x − 2 = (x − 1)(x + 2). **Roots:** x = 1, x = −2. Solution set = {1, −2}.
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