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