Practice
Factor using Difference of Two Squares.a) 25x2 −9
(5x +3)(5x −3)
(5x +3)(5x −3)
b) 49x2 −64
(7x +8)(7x −8)
(7x +8)(7x −8)
c) 4x2 −9
(2x +3)(2x −3)
(2x +3)(2x −3)
d) 25x2 −81
(5x +9)(5x −9)
(5x +9)(5x −9)
e) 49x4 −121
(7x2 +11)(7x2 −11)
(7x2 +11)(7x2 −11)
f) 81x2 −16
(9x +4)(9x −4)
(9x +4)(9x −4)
g) 64x2 −225
(8x +15)(8x −15)
(8x +15)(8x −15)
h) 49x2 −121
(7x +11)(7x −11)
(7x +11)(7x −11)
i) 4x4 −49
(2x2 +7)(2x2 −7)
(2x2 +7)(2x2 −7)
j) 81x8 −121
(9x4 +11)(9x4 −11)
(9x4 +11)(9x4 −11)