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1·A new method of completing the square with reverse order is presented by change quadric form into standard form.

提出了一种新的将二次型化为标准型的配方法——逆序配方法。

2·The extremal formula of binary quadratic functions is studied by using method of undetermined coefficients, substitution method and method of completing the square.

用特定系数法、换元法、配方法探求二元二次函数的极值公式。

3·When the Ambani residence is finished in January, completing a four-year process, it will be 550 feet high with 400, 000 square feet of interior space.

历时4年，安巴尼的豪宅将在一月完工，届时大厦将高达550英尺(约173米)，内部使用面积可达400,000平方英尺。

4·Method of completing square is often used when transforming a quadratic form into a normal one, whose process is equivalent to making the relevant matrix contract diagonal.

二次型化标准形常采用配方法，而二次型化标准形等价于它的矩阵合同对角化，文中利用初等矩阵和初等变换之间的关系。

5·Much time and effort was spent on completing the 14,000-square-foot Metropolitan ballroom, the property s largest ballroom.

大量的时间和精力花费在完成了14000平方英尺大都会舞厅，财产最大的宴会厅。