Question

Решить уравнение. 513 : (23+Х) + 513 : (23-Х) = 46

Answer 1

513:23+x + 513/23-x = 46
513(23-x) + 513(23+x) = 46(529-x^2)
11799-513x+11799+513x = 24334-26x^2
26x^2+1026x-736=0
D=b^2-4ac= 1026^2-4*26*(-736) = 1129220

x= (-b+-sqrt(D))/2a = (-1026 +- sqrt(1129220))/2*26 = 0.7047.. ; -40.166..