Posted by Joe on Monday, July 19, 2010 at 9:23pm.
Please help me factor this by grouping. I am stuck.
7x^335x^26x+30

algebra  Quidditch, Monday, July 19, 2010 at 10:03pm
7x^3  35x^2  6x + 30
Factor 7x^2 from the first two terms and 6 from the last two terms.

algebra  Joe, Monday, July 19, 2010 at 10:22pm
Thank you.. SO would it be
(x5)(x+5)

algebra  Jen, Monday, July 19, 2010 at 10:52pm
7x^2(x5)6(x5)...

algebra  Quidditch, Monday, July 19, 2010 at 10:52pm
Well, let's try your answer:
(x5)(x+5)
= x^2  25. So, that doesn't work.
Doing the factoring I mentioned previously gives:
7x^2(x  5)  6(x  5)
Now there are two terms. The terms have a common factor of (x5). Using our friendly distributive law we can write:
(7x^26)(x5)

algebra  sally, Monday, July 19, 2010 at 10:59pm
Thank you so so much for your help.

algebra  Quidditch, Monday, July 19, 2010 at 11:12pm
Your very welcome!
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