Posted by Geoff on Thursday, February 4, 2010 at 2:57pm.
Hi, could someone possibly check my answers to these algebra questions? Its not my strong point so have been struggling a little (or alot if they are all wrong!)
3m85m+10 = 22m
4(26x) = 824x
7(a+3)5 = 7a + 16
2x3(4yx) = 2x12y9x
2(4y1)+5y(32y) = 2(4y1) +5y(32y)
If any are wrong would it be possible for some advice? Thanks in advance for taking the time to check them.

Algebra  Geoff, Thursday, February 4, 2010 at 3:34pm
Sorry, the last one should be
2(4y1)+5y(32y) = 6y +15y2y^2

Algebra  Reiny, Thursday, February 4, 2010 at 4:19pm
for the last two, you are not done
You also have an error in the second last one
2x3(4yx)
= 2x12y3x
= x  12y
last one also contains an error.
correct form:
2(4y1)+5y(32y)
= 8y  2 + 15y  10y^2
= 23y  2  10y^2

Algebra  Geoff, Friday, February 5, 2010 at 1:49am
Brilliant! Thanks alot for your help
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