Factor the expression by treating it as the difference of two squares, (x3)2-1

Football player weighed 170 2/3 pounds in may. during the summer he gained 25 5/12 pounds. during the first week of fall practice he lost 10 1/4 pounds and during the second week he lost another 3 1/2 ponds. how much does he weigh at this point? a.182 1/3ib b.181 1/2ib c.182 5/12ib d.183 2/3ib

Percent increase and decrease. original number: 45 new number: 18

Which geometric principle is used to justify the construction below?