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一、填空题(每小题3分,共36分) 1.比较大小:-4/5_______-3/4. 2.设甲数为x,乙数为y,用代数式表示甲乙两数的平方差是________.
First, fill in the blanks (3 points for each question, a total of 36 points) 1. Compare the size: -4/5_______-3/4. 2. Set the number to x, B to y, and use algebraic expression to represent the square of the two numbers. Difference is________.