問題詳情
7.在一長為(3x+8)、寬為(3x+5)的長方形右下角剪下一長為寬為3的小長方形，如圖灰色面積所示。利用此圖因式分解(3x+8)(3x+5)-6x3,則可得下列何式?
(A)(3x+8)(3x+6)
(B) (3x+9)(3x+4)
(C) (3x+10)(3x+3)
(D) (3x+11) (3x+2)。
參考答案
無參考答案
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