1 a)

d = 169 - 88 = 81

x1 = 22 / 2 = 21

x2 = 2

(x - 21)(x - 2)

b)

d = 144 - 80 = 64

x1 = -2

x2 = -4/10

(x + 2)(5x + 2)

2)

d = 169 - 160 = 9

x1 = -8

x2 = -5

( x + 8)(x +5) / (x - 5)(x + 5) = (x + 8) / (x - 5)