Practice
Factor using Difference of Two Squares.a) 25x2 −169
(5x +13)(5x −13)
(5x +13)(5x −13)
b) 49x4 −225
(7x2 +15)(7x2 −15)
(7x2 +15)(7x2 −15)
c) 4x4 −25
(2x2 +5)(2x2 −5)
(2x2 +5)(2x2 −5)
d) 49x4 −144
(7x2 +12)(7x2 −12)
(7x2 +12)(7x2 −12)
e) 4x4 −121
(2x2 +11)(2x2 −11)
(2x2 +11)(2x2 −11)
f) 81x2 −64
(9x +8)(9x −8)
(9x +8)(9x −8)
g) 25x2 −169
(5x +13)(5x −13)
(5x +13)(5x −13)
h) 25x4 −81
(5x2 +9)(5x2 −9)
(5x2 +9)(5x2 −9)
i) 64x2 −81
(8x +9)(8x −9)
(8x +9)(8x −9)
j) 25x2 −64
(5x +8)(5x −8)
(5x +8)(5x −8)