can you help me factor this problem?
回答 (4)
2008-10-26 5:58 am
✔ 最佳答案
7(25r^2 + 70r + 49)7(5r+7)(5r+7)
2008-10-26 10:58 am
7 (25 r ² + 70 r + 49 )
7 ( 5r + 7 ) ( 5r + 7 )
7 ( 5r + 7 ) ²
7 ( 5r + 7 ) ( 5r + 7 )
7 ( 5r + 7 ) ²
2008-10-26 8:21 am
175r^2 + 490r + 343
= 7(25r^2 + 70r + 49)
= 7(25r^2 + 35r + 35r + 49)
= 7[(25r^2 + 35r) + (35r + 49)]
= 7[5r(5r + 7) + 7(5r + 7)
= 7(5r + 7)(5r + 7)
= 7(5r + 7)^2
= 7(25r^2 + 70r + 49)
= 7(25r^2 + 35r + 35r + 49)
= 7[(25r^2 + 35r) + (35r + 49)]
= 7[5r(5r + 7) + 7(5r + 7)
= 7(5r + 7)(5r + 7)
= 7(5r + 7)^2
2008-10-26 6:16 am
Pull out the Greatest Common Factor of 7:
7(25r^2 + 70r + 49)
Then factor the polynomial:
7(5r+7)(5r+7)
Then, you can write it as:
7(5r+7)^2
7(25r^2 + 70r + 49)
Then factor the polynomial:
7(5r+7)(5r+7)
Then, you can write it as:
7(5r+7)^2
收錄日期: 2021-05-01 11:25:09
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https://hk.answers.yahoo.com/question/index?qid=20081025215348AA87nwt