25Y2 - 9 = 0
25Y2 = 9
Y2 = 9/25
take square root each side
Y = sqrt(9/25)
Y = 3/5
-----------------check
25(3/5)2 - 9 = 0
25(9/25) - 9 = 0
9 - 9 = 0
0 - 0
-------------checks
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(5y - 2)(5y + 2)
9(2x - 1)(2x + 1)
4x2 - 9 = (2x + 3)(2x - 3)
24
3x squared minus 25x minus 28