Practice
Factor using Difference of Two Squares.a) 9x2 −100y2
(3x +10y)(3x −10y)
(3x +10y)(3x −10y)
b) 25x2 −144y2
(5x +12y)(5x −12y)
(5x +12y)(5x −12y)
c) 49x2 −25y2
(7x +5y)(7x −5y)
(7x +5y)(7x −5y)
d) 16x2 −81y2
(4x +9y)(4x −9y)
(4x +9y)(4x −9y)
e) 9x2 −196y2
(3x +14y)(3x −14y)
(3x +14y)(3x −14y)
f) 9x2 −196y12
(3x +14y6)(3x −14y6)
(3x +14y6)(3x −14y6)
g) 4x2 −9y2
(2x +3y)(2x −3y)
(2x +3y)(2x −3y)
h) 36x2 −49y2
(6x +7y)(6x −7y)
(6x +7y)(6x −7y)
i) 49x8 −9y2
(7x4 +3y)(7x4 −3y)
(7x4 +3y)(7x4 −3y)
j) 81x2 −4y2
(9x +2y)(9x −2y)
(9x +2y)(9x −2y)