Question

Решите уравнение пожалуйста

Answer 1

$25x {}^{2} - 120x + 144 - 10x + 24 + 1 = 0 \\ 25x {}^{2} - 130x + 169 = 0 \\ d = 130 { }^{2} - 4 \times 25 = 16900 - 16900 = 0 \\ x = \frac{130 + 0}{50} = \frac{130}{50} = \frac{13}{5} = 2 \frac{3}{5}$

Answer 2

t=5x-12,

t^2-2t+1=0,

(t-1)^2=0,

(5x-12-1)^2=0,

5x-13=0,

x=13/5