Question

Решите уравнение:
(3x^2-8)=9x(x-7)

Answer 1

3х²-8=9х(х-7)
3х²-8=9х²-63х
3х²-8-9х²+63х=0
-6х²+63х-8=0
6х²-63+8=0
х(1,2)=63±√-63²-4*6*8/2*6=63±√3777/12

х1=63+√3777/12

х2=63-√3777/12