下列圖形面積的變化，可用哪一個式子表示? (A)(a + b)2 - 2(a + b) ● b + b2 = a2(B)(a

問題詳情

1. 下列圖形面積的變化，可用哪一個式子表示?

(A)(a + b)2 - 2(a + b) ● b + b2 = a2
(B)(a - b)2 + 2(a + b) ● b + b2 = a2
(C)(a + b)2 + 2(a + b) ● b - b2 = a2
(D)(a - b)2 - 2(a + b) ● b - b2 = a2

參考答案

答案：A
難度：適中0.5
書單：沒有書單，新增

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