Question

Решите уравнение
(3x - 1) (3x + 1) + (4x + 1)^2 = (5x - 6)^2

Answer 1

$(3x - 1)(3x + 1) + (4x + 1) {}^{2} = (5x - 6) {}^{2} \\ 9 {x}^{2} - 1 + 16x {}^{2} + 8x + 1 = 25 {x}^{2} - 60x + 36 \\ 68x = 36 \\ x = \frac{9}{17}$

Answer 2

9х^2-1+16х^2+8х+1=25х^2-60х+36

25х^2+8х=25х^2-60х+36

8х=-60х+36

8х+60х=36

68х=36

х=9/17