x^2 + 2x - 352 = 0x^2 = 3(2x - 3)2x^2 - 3(2x) + 6 - 3 = 02x^2 - 6x + 3 = 0
2s^2 - 18 = 5s - 202s^2 - 5s - 2 = 0
u^2 - 2u + 1 = u + 1u^2 - 3u = 0u(u - 3) = 0u = 0 или u = 3.
x^2 + 2x - 352 = 0
x^2 = 3(2x - 3)
2x^2 - 3(2x) + 6 - 3 = 0
2x^2 - 6x + 3 = 0
2s^2 - 18 = 5s - 20
2s^2 - 5s - 2 = 0
u^2 - 2u + 1 = u + 1
u^2 - 3u = 0
u(u - 3) = 0
u = 0 или u = 3.