Trắc nghiệm Toán học 10 cánh diều bài 4 Bất phương trình bậc hai một ẩn

A A. \(\{x \in \mathbb{R} \mid x \ne 1\}\) B B. \(\{x \in \mathbb{R}\}\) C C. \(\{1\}\) D D. \(\emptyset\)

A A. \(\{3\}\) B B. \(\{x \in \mathbb{R} \mid x \le 3\}\) C C. \(\{x \in \mathbb{R} \mid x \ge 3\}\) D D. \(\emptyset\)

A A. \(\{x \in \mathbb{R} \mid x \ne 1\}\) B B. \(\{x \in \mathbb{R}\}\) C C. \(\emptyset\) D D. \(\{1\}\)

A A. \(\{x \in \mathbb{R}\}\) B B. \(\emptyset\) C C. \(\{2\}\) D D. \(\{x \in \mathbb{R} \mid x \ne 2\}\)

A A. \((2, 3)\) B B. \((-\infty, 2] \cup [3, +\infty)\) C C. \([2, 3]\) D D. \((-\infty, 2) \cup (3, +\infty)\)

A A. \(x \in (-\infty, 1) \cup (3, +\infty)\) B B. \(x \in (1, 3)\) C C. \(x \in [1, 3]\) D D. \(x \in (-\infty, 1] \cup [3, +\infty)\)

A A. \((-\infty, -2] \cup [2, +\infty)\) B B. \((-2, 2)\) C C. \((-\infty, -2) \cup (2, +\infty)\) D D. \([-2, 2]\)

A A. \(x \in (2, 3)\) B B. \(x \in (-\infty, 2) \cup (3, +\infty)\) C C. \(x \in [2, 3]\) D D. \(x \in (-\infty, 2] \cup [3, +\infty)\)

A A. \(\{x \in \mathbb{R}\}\) B B. \(\{1\}\) C C. \(\{x \in \mathbb{R} \mid x \ne 1\}\) D D. \(\emptyset\)

A A. \(\left[-\frac{1}{2}, 1\right]\) B B. \(\left(-1, \frac{1}{2}\right)\) C C. \(\left(-\infty, -1\right] \cup \left[\frac{1}{2}, +\infty\right)\) D D. \(\left(-1, \frac{1}{2}\right]\)

A A. \(\{x \in \mathbb{R}\}\) B B. \(\emptyset\) C C. \((-\infty, x_1) \cup (x_2, +\infty)\) với \(x_1, x_2\) là nghiệm D D. \((x_1, x_2)\) với \(x_1, x_2\) là nghiệm

A A. \(\{x \in \mathbb{R}\}\) B B. \(\emptyset\) C C. \((-\infty, 1)\) D D. \((1, +\infty)\)

A A. \(\{x \in \mathbb{R} \mid x \ne -1\}\) B B. \(\{x \in \mathbb{R} \mid x > -1\}\) C C. \(\{x \in \mathbb{R} \mid x < -1\}\) D D. \(\{x \in \mathbb{R}\}\)

A A. \(\emptyset\) B B. \(\{x \in \mathbb{R}\}\) C C. \((-\infty, 1)\) D D. \((1, +\infty)\)

A A. \((1, 2)\) B B. \((-\infty, 1) \cup (2, +\infty)\) C C. \([1, 2]\) D D. \((-\infty, 1] \cup [2, +\infty)\)