2x 10 x 2 x 20. 19/20-Х=1/4. X+1/6+20/X-1 4. Х-1/18=1/12. Х+1/12=1/3. X3-2x2-2x+1. 10x 15 уравнение решении. 1/2x2-10. (X - 15) + (3x - 7) = 2(x−15)+(3x−7)=2. 2x20. 2x+10/x2+x-20 сократите. (X2-x-20)(x2-7x+12) a u b. X2= -5+4t-0,8t2. X1=5-6t и x2=-4+3t. X1=2+t-0,5t2 x2=-1+2t+2t2