QUESTION:

 

Factor:  9 x - 25 y2 + 10 y - 1

 

9x- (25 y- 10 y + 1)

 

9x-  (5y - 1)

 

[3x - (5y - 1)] [3x + (5y - 1)]

 

(3x - 5y + 1) (3x + 5y - 1)

 

  Information Related to the problem:

Perfect Square:  (a + b)2 = a2 + 2a + b2

Perfect Square:  (a - b)2 = a2 - 2a + b2

Differences of Squares:  a2 - b2 = (a - b)(a + b)

 

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