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crazymath44
New Member

USA
1 Posts

 Posted - 02/09/2011 :  19:01:57 I'm confused with taking these problems to the next step..can someone help please? 1) 63c-7 2) x-4x 3) 4a-36 4)c-d please show me the answers with steps..i just need a little assistance to get me started. Thanks so much!

Subhotosh Khan

USA
9117 Posts

 Posted - 02/11/2011 :  12:02:02 quote:Originally posted by crazymath44I'm confused with taking these problems to the next step..can someone help please? 1) 63c-7 First factorize all the terms63c-7= 9 * 7 * c * c - 7Now look for common factor in the terms. We see that 7 is common in the first and the second term. Factor it out:= 7 * (9 * c- 1)Now we see that we can re-write the terms within the parenthesis as difference of two squares.= 7 * [(3 * c) - 1]Futrther factorize the terms using difference of squares formula which states a - b = (a+b)*(a-b)continue... Please share your work with us indicating exactly where you are stuck - so that we may know where to begin to help you.2) x-4x 3) 4a-36 4)c-d please show me the answers with steps..i just need a little assistance to get me started. Thanks so much!
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