Ответы и объяснения

2014-03-04T16:50:34+00:00
4)
(3y+1\5-4х)-3*(4х-5\1+3у)-4 = (5^3-4^3х^3\3^3y^3+1)*(1+3^4y^4\4^4x^4-5^4)=(5-4x)^3*(1+3y)^4\(3y+1)^3*(4x-5)^4= -(4x-5)^3*(1+3y)\(4x-5)^4=1+3y\4x-5
5)
(- a-2\3-b)-2*2a-a2\9-b2=(3-b)^2\(a-2)^2*-a(a-2)\(3-b)(3+b)=3-b\a-2*a\3+b