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F.2 Maths Factorize
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1. (x+4)^3+(2x-1)^3 2. 125+8(x+2)^3 3. y^6 - 1 4. 1 + x^6 Thanks for your help and show steps
最佳解答:
圖片參考：http://i1099.photobucket.com/albums/g395/jasoncube/672A547D540D_zps2163a975.png http://i1099.photobucket.com/albums/g395/jasoncube/672A547D540D_zps2163a975.png 2013-07-20 15:59:32 補充： The factorization is usually over integers only in F.2 level.
其他解答:
仲可以再分WO 第4題 x^6+1 =(x^2+1)(x^4-x^2+1) =(x^2+1)(x^4+2x^2+1-3x^2) =(x^2+1)[(x^2+1)^2-3x^2] =(x^2+1)(x^2+1-x開方3)(x^2+1+x開方3)
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