X-4/x+1-10/x²-1=4/9 бистро

Question

X-4/x+1-10/x²-1=4/9 бистро

Answer 1

X-4/x+1-10/x²-1=4/9
(x-4)(x-1)-10/x²-1=4/9
x²-x-4x+4-10/x²-1=4/9
x²-5x-6/x²-1=4/9