Practice
Factor using Difference of Two Squares.a) 81x2 −169y2
(9x +13y)(9x −13y)
(9x +13y)(9x −13y)
b) 25x2 −196y2
(5x +14y)(5x −14y)
(5x +14y)(5x −14y)
c) 25x2 −36y2
(5x +6y)(5x −6y)
(5x +6y)(5x −6y)
d) 9x4 −196y2
(3x2 +14y)(3x2 −14y)
(3x2 +14y)(3x2 −14y)
e) 9x2 −16y2
(3x +4y)(3x −4y)
(3x +4y)(3x −4y)
f) 49x2 −121y2
(7x +11y)(7x −11y)
(7x +11y)(7x −11y)
g) 25x2 −121y2
(5x +11y)(5x −11y)
(5x +11y)(5x −11y)
h) 9x8 −16y2
(3x4 +4y)(3x4 −4y)
(3x4 +4y)(3x4 −4y)
i) 9x2 −64y2
(3x +8y)(3x −8y)
(3x +8y)(3x −8y)
j) 25x2 −196y2
(5x +14y)(5x −14y)
(5x +14y)(5x −14y)