1) x^2 - 7x + 10 = 0(x - 5)(x - 2) = 0x = 5 or x = 2
2) y^2 - 10y + 25 = 0(y - 5)^2 = 0y = 5
3) -t^2 + t + 3 = 0(t - 3)(t + 1) = 0t = 3 or t = -1
4) 2a^2 - a = 32a^2 - a - 3 = 0(2a + 3)(a - 1) = 0a = -3/2 or a = 1
1) x^2 - 7x + 10 = 0
(x - 5)(x - 2) = 0
x = 5 or x = 2
2) y^2 - 10y + 25 = 0
(y - 5)^2 = 0
y = 5
3) -t^2 + t + 3 = 0
(t - 3)(t + 1) = 0
t = 3 or t = -1
4) 2a^2 - a = 3
2a^2 - a - 3 = 0
(2a + 3)(a - 1) = 0
a = -3/2 or a = 1