1)9x^2 - 1 = (3x - 2)^29x^2 - 1 = 9x^2 - 12x + 40 = -12x + 4 - 112x = 3x = 3/12x = 1/4
2)(5 + 2y)(y - 3) - 2(y - 1)^2 = 05y - 15 + 2y^2 - 6y - 2y^2 + 4y - 2 = 05y - 15 - 6y + 4y - 2 = 03y - 17 = 03y = 17y = 17/3
1)
9x^2 - 1 = (3x - 2)^2
9x^2 - 1 = 9x^2 - 12x + 4
0 = -12x + 4 - 1
12x = 3
x = 3/12
x = 1/4
2)
(5 + 2y)(y - 3) - 2(y - 1)^2 = 0
5y - 15 + 2y^2 - 6y - 2y^2 + 4y - 2 = 0
5y - 15 - 6y + 4y - 2 = 0
3y - 17 = 0
3y = 17
y = 17/3