Practice
Factor using Difference of Two Squares.a) 16x2 −49
(4x +7)(4x −7)
(4x +7)(4x −7)
b) 4x2 −225
(2x +15)(2x −15)
(2x +15)(2x −15)
c) 49x2 −225
(7x +15)(7x −15)
(7x +15)(7x −15)
d) 64x2 −225
(8x +15)(8x −15)
(8x +15)(8x −15)
e) 25x2 −36
(5x +6)(5x −6)
(5x +6)(5x −6)
f) 49x2 −9
(7x +3)(7x −3)
(7x +3)(7x −3)
g) 4x2 −9
(2x +3)(2x −3)
(2x +3)(2x −3)
h) 25x8 −36
(5x4 +6)(5x4 −6)
(5x4 +6)(5x4 −6)
i) 9x2 −100
(3x +10)(3x −10)
(3x +10)(3x −10)
j) 81x2 −49
(9x +7)(9x −7)
(9x +7)(9x −7)