Practice
Factor using Difference of Two Squares.a) 4x4 −121
(2x2 +11)(2x2 −11)
(2x2 +11)(2x2 −11)
b) 81x2 −121
(9x +11)(9x −11)
(9x +11)(9x −11)
c) 81x4 −16
(9x2 +4)(9x2 −4)
(9x2 +4)(9x2 −4)
d) 4x8 −121
(2x4 +11)(2x4 −11)
(2x4 +11)(2x4 −11)
e) 64x2 −9
(8x +3)(8x −3)
(8x +3)(8x −3)
f) 81x2 −49
(9x +7)(9x −7)
(9x +7)(9x −7)
g) 36x2 −49
(6x +7)(6x −7)
(6x +7)(6x −7)
h) 49x8 −4
(7x4 +2)(7x4 −2)
(7x4 +2)(7x4 −2)
i) 81x2 −196
(9x +14)(9x −14)
(9x +14)(9x −14)
j) 49x2 −4
(7x +2)(7x −2)
(7x +2)(7x −2)