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一、判断题（１６分）１．ｃ不是代数式．（ ）２．２ａ－３＝４－ａ不是方程．（ ）３．３４不是方程（ｘ－１２）３＝１６４的解．（ ）４．ｂ表示任意整数，ｂ的倒数就是１ｂ．（ ）５．ｙ的平方与３ｘ的平方差是ｙ２－３ｘ２．（ ）６．代数式９ｘ２的值一定大于零．
First, the judgment questions (16 points) 1. c is not algebraic. () 2.2a-3 = 4-a is not an equation. () 3.34 is not the solution of equation (x-12) 3 = 164. () 4. b represents an arbitrary integer, b is the reciprocal of 1b. () 5. The squared difference between y and 3x is y2-3x2. () 6. The value of the algebraic 9x2 must be greater than zero.