Одна сторона равна 2:4=0,5 м
все стороны в квадрате равны
<span>а площадь=0.5*0.5=0.25м квадратных
периметр равен 4*а
а - одна сторона</span>
X -2 -1 0 1 2
y 0 -2 -4 -6 -8
![\displaystyle \left \{ {{a_1+a_2+a_3=12} \atop {a_1\cdot a_2=8}} \right. \Rightarrow \left \{ {{a_1+a_1+d+a_1+2d=12} \atop {a_1\cdot(a_1+d)=8}} \right. \Rightarrow\\ \\ \left \{ {{3a_1+3d=12|:3} \atop {a_1(a_1+d)=8}} \right. \Rightarrow \left \{ {{a_1+d=4} \atop {a_1\cdot 4=8}} \right. \Rightarrow \left \{ {{d=2} \atop {a_1=2}} \right.](https://tex.z-dn.net/?f=%5Cdisplaystyle++%5Cleft+%5C%7B+%7B%7Ba_1%2Ba_2%2Ba_3%3D12%7D+%5Catop+%7Ba_1%5Ccdot+a_2%3D8%7D%7D+%5Cright.+%5CRightarrow+%5Cleft+%5C%7B+%7B%7Ba_1%2Ba_1%2Bd%2Ba_1%2B2d%3D12%7D+%5Catop+%7Ba_1%5Ccdot%28a_1%2Bd%29%3D8%7D%7D+%5Cright.+%5CRightarrow%5C%5C+%5C%5C++%5Cleft+%5C%7B+%7B%7B3a_1%2B3d%3D12%7C%3A3%7D+%5Catop+%7Ba_1%28a_1%2Bd%29%3D8%7D%7D+%5Cright.+%5CRightarrow+%5Cleft+%5C%7B+%7B%7Ba_1%2Bd%3D4%7D+%5Catop+%7Ba_1%5Ccdot+4%3D8%7D%7D+%5Cright.+%5CRightarrow+%5Cleft+%5C%7B+%7B%7Bd%3D2%7D+%5Catop+%7Ba_1%3D2%7D%7D+%5Cright.+)
Итак, первое число равен 2, тогда второе - (2+2=4), а третье - (2+2*2)=6
5) ((a^1/3-b^1/3)*(ab)^1/3(a^2/3-b^2/3))/(ab)^1/3*(a^1/3+b^1/3)=(a^1/3-b^1/3)^2
3) =sqrt(a)(sqrt(a)-9)/7(a^1/4+3))=sqrt(a)(a^1/4-3)/7
=1/(sqrt(x)-1)
4)
(3/4)^3/5=(9/12)^3/5<(11/12)^3/5