Topic: greatest common factor list of topics
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18 items are filed under this topic.

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	Highest Common Factor of Two Polynomials		2009-07-28
		From Nazrul: If x+a be the h.c.f. of x^2+px+q and x^2+mx+n, how can I prove that (p-m)a=q-n. Answered by Robert J. Dawson & Janice Cotcher.
	Greatest common factor		2007-01-26
		From Alexis: What is the greatest common factor of 52,and 100? Answered by Penny Nom.
	The greatest common factor		2006-10-17
		From Myrna: What is the greatest common factor of 49,164 and 80,860 Answered by Stephen La Rocque.
	The greatest common factor of two numbers		2006-07-16
		From Fadwa: What is the greatest common factor(GCF) of the following algebraic expressions? 1680 and 6048 Answered by Stephen La Rocque.
	GCD		2006-03-20
		From Jana: How can i prove: if gcd(a,b)=1 then gcd(a+b,ab)=1 Answered by Penny Nom.
	Highest common factor		2006-02-06
		From Sajid: 1.A rectangular field has dimensions 156 m and 84 m. It is to be fenced with wire netting supported by stakes, equally spaced, a stake being placed at each corner of the field. What is the greatest possible distance between any two stakes, given that it should be more than 2 m and less than 8 m? 2. What is the length of the side of the largest square tile which can be used to cover a floor 525 cm long by 275 cm wide without leaving a gap? 3. Find the greatest number which will divide 140 and 249 to leave remainders 8 and 18 respectively? 4. Find the greatest number which will divide 304 and 298 so as to leave remainder 4 in each case. Answered by Penny Nom.
	GCF, LCM, primes and the ladder method		2006-01-07
		From Linda: How would I teach both finding the GCF and LCM with prime factors...I recall the ladder method vaguely.??? Answered by Penny Nom.
	GCD and LCM		2004-10-31
		From Cartalina: how do you calculate the "positive difference between the GCF and LCM of two numbers"? Answered by Penny Nom.
	GCD (a + b , a^2 - ab + b^2)		2004-08-27
		From Carol: Let a and b integer and relatively prime. Proof that: GCD (a + b , a^2 - ab + b^2) = 1 or 3 Answered by Penny Nom.
	Greatest Common Factor		2003-11-08
		From Beth: How do you use the Greatest Common Factor in addtion and subtraction of fraction? Answered by Penny Nom.
	Some 5th grade problems		2003-01-24
		From Sabrina: [What is the greatest common factor of 20,28, and 36?] next problem is [5k+7(k+8)= ] next problem [Curtis simplified 0.8 divided by 0.2 x 0.04 and got 10. Latoya Simplified and got 1.6. is either correct? Can you explaine how you got the answer please.] Answered by Penny Nom.
	Reduce 79,537/3,623,420		2001-12-13
		From Eliana: How do you reduce 79,537/3,623,420. Answered by Claude Tardif.
	GCD and LCM		2001-09-24
		From David: Find the GCD adn LCM of the following numbers. Assume p 2 to the power p, 3 to power q, 5 to power r and 2 to power q, 3 to power r, 7 to power p Answered by Penny Nom.
	Greatest Common Factor		2001-05-09
		From Nicole: What is the Greatest Common Facter for: 126,261 1008,1080 546,1995 128,256 and 255,256 Answered by Penny Nom.
	Greatest common factor		2001-01-17
		From A teacher: I'm a teacher at a local Middle School and I would like the answers for the following questions. What is the greatest common factor for.. 546 and 780 156 and 732 . . . Answered by Leeanne Boehm and Penny Nom.
	A pair of numbers whose GCF is 28		2000-12-27
		From John: Name 2 different pairs of numbers whose GCF is 28. Answered by Penny Nom.
	Factoring, primes, GCF and LCM		2000-02-27
		From Ruth Kroek: My son is in grade seven, he has to do a Factoring Booklet the areas covered are: Prime #'s Composite #'s Rainbow Factoring Finding Multiples (consecutive multiples) Finding GCF of 2-3 numbers uning Rainbow factoring Finding LCM of 2 numbers using consecutive multiples prime factor trees prime factor ladders finding GCF of 2 numbers using Prime number Method Although his text 'Math Power' gives some information, we are at a loss .. Answered by Penny Nom.
	Greatest Common Factor.		1998-01-09
		From Percy Stribling: how do you figure out what the greater common factor is? Answered by Penny Nom.

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