X 2 20x 3 0. X3-2x2+x+3. X2 3x x 3 0. A{X|X^3-3x^2+2x=0}. X^3+2x^2+3x+2=0. X2+25/x. 3х2-75=0. 2x+15+3x=x+75 решение уравнения x=10. 3х2=75. (X-2)(-2x-3)=0. 2^X=3^X. 3x-2=0. (2x-3)(2x+3). X2+3x=4. Y=-2x^2+4x+6. Y=x2-4x+3. Y=2(X+3)^2-4. +X2+x3 - 2x4 = 2 2x1 + 3x2-x3 + x4 = 7 4x1 - 2x2 -5x3 = 1 [5x1 + 4x2-5x3 + 2x4 = 11