7x^2 - 63 y^2 = ?
a. ( 7 x- 9 y) ( 9x + 7 y)
b. ( 7x - 9y) ( 7x + 9y )
c. 9 ( x - 3y ) ( x + 3y)
d. 7 ( x- 3y ) ( x+ 3y)
Answers
Answered by
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so according to this your answer is option (d)..
hope helpful...
thanks....
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