X 3 x 2 8x 12 0. X2+7x+2=0. X2+7x+12 0 дискриминант. 12х7. 7x+2x. X/3+X/12 15/4. -4x=15-3(3x-5). X5 а15. X = -5x - 15/x+3. (X-2)(-2x-3)=0. 2^X=3^X. 3x-2=0. (2x-3)(2x+3). |Х-4|<|3x|. 2x^2+2x^2. 3-Х/3=Х/2. ( X1 + 2x2 + 4x3 - 3x4 = 0 3x1 - 5x2 6x3 - 4x4 - 0 4x1 + 5.x3 - 2x3 + 3x4 0 3x1 + 8.x3 + 24x3 - 19.x4 - 0