Answer and explanation

Correct answer: B.

  1. Step 1: Factor: , so the roots are and .
  2. Step 2: The parabola opens upward, so it is positive between the roots and negative 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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What is the solution set of… | Egyptian Scholastic Test (EST)