Question

решите уравнение 3x+13/x+1-4=x+11/x^2-1

Answer 1

(3x+13)/(x+1)-4=(x+11)/(x-1)(x+1)
(3x+13)(x-1)-4(x²-1)=x+11,x≠1 u x≠-1
3x²+10x-13-4x²+4-x-11=0
x²-9x+20=0
x1+x2=9 U x1*x2=20
x1=4
x2=5