当 b = 3 时，求 2b² 的值。
Correct answer(s):
- 18
Topic
Evaluating Algebraic Expressions
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Quizzes in Evaluating Algebraic Expressions
当 a = 2 时，求 a² + 1 的值。
Correct answer(s):
- 5
当 a = 10 时，选择 5a + 5 和 6a – 5 之间正确的比较符号。
Correct answer(s):
- =