9th grade
posted by Anonymous .
Find a pair of factors for each number using the difference of two squares.
a. 45
b. 77
c. 112

a) 45 = 15 x 3 = (9+6)(96) = 81  36
= 9^2  6^2
b) 77 = 11 x 7 = (9 + 2) (9  2)
= 9^2  2^2
c) Your turn