Multiply: (3x + 8)(2y - 1)
My answewr: (3x)(2x) + (3x)(-1) + (8)(2y) + (8)(-1)
6xy-3x+16y-8
help with math problem?
2009-06-05 3:51 pm
回答 (6)
2009-06-05 4:17 pm
✔ 最佳答案
Your answer is correct.
2009-06-05 4:31 pm
(3x + 8)(2y - 1)
= (3x)(2y) + (3x)(-1) + (8)(2y) + 8(-1)
= 6xy - 3x + 16y - 8
Your answer is correct.
= (3x)(2y) + (3x)(-1) + (8)(2y) + 8(-1)
= 6xy - 3x + 16y - 8
Your answer is correct.
2009-06-05 4:01 pm
3x2y-3x+8(2y)-8
6xy-3x+16y-8
yes you are correct.
6xy-3x+16y-8
yes you are correct.
2009-06-05 4:00 pm
your correct, men!!
2009-06-05 3:56 pm
you are correct
2009-06-05 3:56 pm
Yes you are correct. You should have used the FOIL method to do this. Check out my Math Variety blog posts about the FOIL method for an explanation of what it is, practice problems, and solutions. Click on ads/links of interest and use my search box.
http://mathvariety.blogspot.com/2009/04/foil-method.html
http://mathvariety.blogspot.com/2009/05/foil-method-practice-problems.html
http://mathvariety.blogspot.com/2009/05/foil-method-solutions-to-practice.html
F: 3x*2y=6xy
O: 3x*-1= -3x
I: 8*2y=16y
L: 8*-1= -8
http://mathvariety.blogspot.com/2009/04/foil-method.html
http://mathvariety.blogspot.com/2009/05/foil-method-practice-problems.html
http://mathvariety.blogspot.com/2009/05/foil-method-solutions-to-practice.html
F: 3x*2y=6xy
O: 3x*-1= -3x
I: 8*2y=16y
L: 8*-1= -8
收錄日期: 2021-05-01 12:28:46
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