Mark M. answered 02/24/16
Tutor
4.9
(952)
Retired college math professor. Extensive tutoring experience.
The GCF is 7xy2, not 7xy.
So, 28x2y2 - 7xy2 = 7xy2(4x) - 7xy2(1) = 7xy2(4x - 1)
Seth S.
asked 02/24/16Mark M. answered 02/24/16
Retired college math professor. Extensive tutoring experience.
Get a free answer to a quick problem.
Most questions answered within 4 hours.
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.