[計量] 看不懂題目
請問大家以下一題數學的表達
題目是：
if the sum of the two numbers is 21, and the difference of their square is
63, what is the greater of the two numbers?
請問標黃色的是什麼意思呢?
(X-Y)^2與X^2-Y^2的英文表達會是什麼呢？
感謝回覆的大大....
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◆ From: 115.43.229.13
※ 編輯: kao152 來自: 115.43.229.13 (10/13 16:32)
→
10/13 16:58, , 1F
10/13 16:58, 1F
→
10/13 17:04, , 2F
10/13 17:04, 2F
→
10/13 17:05, , 3F
10/13 17:05, 3F
推
10/13 17:15, , 4F
10/13 17:15, 4F
推
10/13 17:22, , 5F
10/13 17:22, 5F
→
10/13 17:34, , 6F
10/13 17:34, 6F
→
10/16 17:11, , 7F
10/16 17:11, 7F
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