Factoring a Difference of Two Perfect Squares

1)

x2 − 81 = 0

2)

x2 − 576 = 0

3)

x2 − 49 = 0

1)	x2 − 81 = 0	2)	x2 − 576 = 0	3)	x2 − 49 = 0
	{-9 , 9}		{-24 , 24}		{-7 , 7}