Question

решите уравнение х+4/4х2+4х+1-10/1-2х=15/2х+1

Answer 1

(x+4)/(2x+1)² -10/(1-2x)=15/(2x+1)
x≠-1/2 U x≠1/2
(x+4)(1-2x)-10*(2x+1)²-15*(1-4x²)=0
x-2x²+4-8x-40x²-40x-10-15+60x²=0
18x²-47x-21=0
D=2209+1512=3721
x1=(47-61)/36=7/18
x2=(47+61)/18=6