We begin by “ completing the cube ' , ( x + r ) 3 = x3 + 3rx2 + 3r2x + p3 , so that G ( x ; r , s ) ( x + r ) 3 + ( s – 3r2 ) x – p3 ( x + r ) 3 + ( s – 3r ...
確定！ 回上一頁
