X=(-1)^(n+1) * пи/3 + 2пи*n
3а^2b • (-5а^3b)=-15a^5b^2
(2х^2у)^3=8x^6y^3
<span>(а + с)(а - с) - b(2а ) - (а - b + с) (а - b- с)= 0.
</span>a^2-c^2-2ab-a^2+ab+ac+ab-b2-cb-ac+bc+c^2=0
-2ху^2 • Зх^3у^5=-6x^4y^7
(-4аb^3<span>)^2=16a^2b^6</span>
5a^3b-5ab^3/a^2-b^2 = 5ab (a^2-b^2)/a^2-b^2 = 5ab
Y1=6, y2=4, y3=2, y4=4/3, y5=2/3, y6=0, y7= -2/3, y8= -4/3, y9= -2, y10= -4