Hence factorize
16x*3 -4x-48
*3 is cute
urgent-F.2 maths
2010-10-03 10:47 pm
回答 (1)
2010-10-06 4:08 am
✔ 最佳答案
yomy teacher also said this:
16x^3-4x-48
ans:
if 8x^3-27
=(2x-3)(4x^2+6x+9)
16^3-4x-48
=4(4x^3-x-12)
=4(4x^3-9x+8x-12)
=4[x(4x^2-9)+8x-12]
=4{x[(2x)^2-3^2]+4(2x-3)}
=4{x[2x-3][2x+3]+4(2x-3)}
=4{[4x^2+3x+4][2x-3]}
收錄日期: 2021-04-23 19:22:56
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101003000051KK00890