Practice
Factor using Difference of Two Squares.a) 9x4 −100
(3x2 +10)(3x2 −10)
(3x2 +10)(3x2 −10)
b) 49x4 −4
(7x2 +2)(7x2 −2)
(7x2 +2)(7x2 −2)
c) 4x2 −25
(2x +5)(2x −5)
(2x +5)(2x −5)
d) 4x2 −225
(2x +15)(2x −15)
(2x +15)(2x −15)
e) 64x2 −121
(8x +11)(8x −11)
(8x +11)(8x −11)
f) 25x8 −16
(5x4 +4)(5x4 −4)
(5x4 +4)(5x4 −4)
g) 9x8 −16
(3x4 +4)(3x4 −4)
(3x4 +4)(3x4 −4)
h) 81x4 −49
(9x2 +7)(9x2 −7)
(9x2 +7)(9x2 −7)
i) 49x2 −225
(7x +15)(7x −15)
(7x +15)(7x −15)
j) 25x4 −64
(5x2 +8)(5x2 −8)
(5x2 +8)(5x2 −8)