0.09х-0,12-0,21х+0,14=0,02-0,12х
0,09х-0,21х+0,12х=0,02-0,14+0,12
0х=0
0,29х+58-0,89х=154
0,29х-0,89х=154-58
-0,6х=96
-х=96/0,6
-х=160
х=-160
А-8х / а : ах-8х² / а² = а-8х / а : х(а-8х) / а² = а-8х / а * а² / х(а-8х) = а/х
а/х = 27/45 = 3/5 = 0,6
1) (5b+1)^3=125b^3+75b^2+15b+1
2) (2t+3)^3=8t^3+36t^2+54t+9
1. 1/(a-2) - 4a/(a-2)(a+2)·(1/(a-1) -1/a(a-1))=1/(a-2) - (4a·(a-1))/(a-2)(a+2)a(a-1)=(a+2-4)/(a-2)(a+2)=(a-2)/(a-2)(a+2)=1/(a+2)
2. 7-5m / (m-4) + (4m(m-4)(m+4))/(m+4)4m + (9m-23)/(m-4)=)7-5m+m²-8m+16-9m-23) /m-4=m²-4m=m-4=m
3. (1/3+a - 6/(3-a)(3+a) + 2/3-a) ·(9-6a+a²)=((3-a-6+6+2a)/(3-a)(3+a)) · (9-6a+a²)=3+a/(3-a)(3+a) · (9-6a+a²)=1·(3-a)²/(3-a)=3-a
2,43*(1/3)³ + 6²*(2⁵ - 28) = 2,43*1/27 + 36*(32 - 28) = 0,09 + 144 = 144,09