SOLUTION: i dont understand how to do general factoring & its application of factoring by grouping. here is 1 of my problems;7(r-s)+t(r-s)
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Question 406969
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i dont understand how to do general factoring & its application of factoring by grouping. here is 1 of my problems;7(r-s)+t(r-s)
Found 2 solutions by
ewatrrr, jim_thompson5910
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Answer by
ewatrrr(24785)
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Hi
7(r-s)+t(r-s)
7r - 7s + rt - st
r(7+t) -s(7+t)
Answer by
jim_thompson5910(35256)
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Let z = r-s
So we go from 7(r-s)+t(r-s) to 7z+tz
Now factor out a 'z' to get z(7+t)
Finally, plug in z=r-s to get (r-s)(7+t)
So 7(r-s)+t(r-s) factors to (r-s)(7+t)
In other words, 7(r-s)+t(r-s) = (r-s)(7+t)
If you need more help, email me at
jim_thompson5910@hotmail.com
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Jim
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