תשובה:
# x = 1) (x = 1) (+ 1 x) 1 (x + 1)
הסבר:
# ((6x) / (4x ^ 2 -3x -1)) * (6 / (7x ^ 2 + 8x + 1)) #
# (Xx = x) / (x = x) x (x = x)
# (+ 6x ^ 2) / (4x ^ 2 × x + x - 1) * (7x ^ 2 + 7x + x 1)) #
(X + 1) + (x - 1)) * (7x (x + 1) + (x + 1) #
(X 1)) (x 1) (x + 1) (1x + 1)