What is the solution set of ?
Answer and explanation
Correct answer: B.
- Step 1: Factor: , so the roots are and .
- Step 2: The parabola opens upward, so it is negative between the roots and positive outside them. The solution set is .
Answer
.
Why not the others: : The wrong region of the parabola was chosen. : The signs of both roots were reversed. : Closed brackets were used for a strict inequality.
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