Posted by Marian on Monday, February 7, 2011 at 11:57am.
I'm stuck here don't have a clue what to do. I've read all my school textbooks but it doesn't make much sense!! The numbers after the letters are small figures as in they u3 meaning( u x u x u). Ta!
Factorise the expression
5 u3v +15 uv210v
taking out the highest common factor. Choose the expression that remains in brackets when this is done.
Select one:
u 3 + 3 uv − 10
u 3 + 3 uv − 2
u 3 + 15 uv − 2
u 3 + 3 uv 2 − 2
u 3v + 3 uv − 2
5 u 3 + 3 uv − 2
u 3v + 3 uv 2 − 2 v
5 u 3 + 15 uv − 10

maths  Reiny, Monday, February 7, 2011 at 12:22pm
5(u^3)(v) + 15(u)(v^2)  10v
you are looking for the largest expression which divides into all 3 terms
I see 5 going into everybody, and also v is found in each term, so
5v(u^3 + 3uv  2) would be the factored form
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