Factorize 4a^2-9b^2+4a+1
Please show steps, thx
form 3 maths factorization
2012-05-11 10:31 pm
回答 (4)
2012-05-11 11:06 pm
✔ 最佳答案
4a² - 9b² + 4a + 1= (4a² + 4a + 1) - 9b²
= (2a + 1)² - (3b)²
= (2a - 3b + 1) (2a + 3b + 1)Y
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你好叻讀form 3，我讀form 2，加油
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2012-05-11 15:12:09 補充：
咁樣做都得，不過煩一D
=(2a-3b)(2a+3b）+4a+1
Ok???
I hope I cam help you!
參考: Maths book, http://www.emathematics.net/
2012-05-12 12:20 am
4a^2-9b^2+4a+1
=4a^2+4a+1-9b^2
=(2a+1)^2-9b^2
=[(2a+1)+3b][(2a+1)-3b]
=(2a+3b+1)(2a-3b+1)
=4a^2+4a+1-9b^2
=(2a+1)^2-9b^2
=[(2a+1)+3b][(2a+1)-3b]
=(2a+3b+1)(2a-3b+1)
2012-05-12 12:12 am
002 should be punished by his selfish action!
2012-05-12 12:02 am
抄答案者 隨處可見~/ 3 \
2012-05-11 16:58:05 補充：
O....請無視我的意見~!=3=
2012-05-11 16:58:05 補充：
O....請無視我的意見~!=3=
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