Решение задания смотри на фотографии
1)
1.(x+2)*3(x-1)/(x-1)²(x-2)(x+2)=3/(x-1)<span>(x-2)
2.3-3(x-1)</span>/(x-1)(x-2)= -3/<span>(x-1)=7,5
2)
1.y(y-3)/(y-3)</span>² - 3y(y+3)/(y-3)<span>(y+3)=y/(y-3) - 3/(y-3)= (y-3)/(y-3)=1
2. 1 * ( 1 - 3/y)= y-3/y= 11/6</span>
X^2 - 6x + 11 = x^2 - 6x + 9 + 2 = (x - 3)^2 + 2 = (x - 3)^2 - (i√2)^2 = (x - 3 + i√2)*(x - 3 - i√2)