Practice
Factor using Difference of Two Squares.a) 9x2 −16
(3x +4)(3x −4)
(3x +4)(3x −4)
b) 49x2 −100
(7x +10)(7x −10)
(7x +10)(7x −10)
c) 81x2 −16
(9x +4)(9x −4)
(9x +4)(9x −4)
d) 81x4 −64
(9x2 +8)(9x2 −8)
(9x2 +8)(9x2 −8)
e) 49x2 −25
(7x +5)(7x −5)
(7x +5)(7x −5)
f) 49x4 −225
(7x2 +15)(7x2 −15)
(7x2 +15)(7x2 −15)
g) 4x4 −225
(2x2 +15)(2x2 −15)
(2x2 +15)(2x2 −15)
h) 81x2 −121
(9x +11)(9x −11)
(9x +11)(9x −11)
i) 25x2 −196
(5x +14)(5x −14)
(5x +14)(5x −14)
j) 81x4 −16
(9x2 +4)(9x2 −4)
(9x2 +4)(9x2 −4)