1 >
2 > [(2x-1)(2x+3)] × [(x+3)(x-2)] + 20 = 0
3 >
4 > (4x² + 4x - 3)(x² + x - 6) + 20 = 0
5 >
6 > (4y - 3)(y - 6) + 20 = 0
7 > 4y² - 27y + 18 + 20 = 0
8 > 4y² - 27y + 38 = 0
9 >
10 > y = [27 ± √(729 - 608)]/8 = [27 ± 11]/8
11 >
12 >
13 > CASE 1: x² + x = 19/4 → x = (-1 ± 2√5)/2
14 > CASE 2: x² + x = 2 → x = 1 || x = -2
>_ ENCRYPTION CRACKED: x = -2, 1, (-1 + 2√5)/2, (-1 - 2√5)/2