Factorize, with steps, thanks. 3（x+3）^2 +18（x+3）+27?
回答 (1)
2018-02-09 7:42 am
✔ 最佳答案
SolSet y=x+3
3(x+3)^2+18(x+3)+27
=3y^2+18y+27
=3(y^2+6y+9)
=3(y+3)^2
=3(x+3+3)^2
=3(x+6)^2
收錄日期: 2021-04-18 18:02:43
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