Solve x2 – 8x + 15 < 0.Select the critical points for the inequality shown.

Set the quadratic equal to zero to find the critical points: x² − 8x + 15 = 0. Factoring gives (x − 3)(x − 5) = 0, so the critical points are x = 3 and x = 5. The correct choices are 3 and 5.

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