1)(0,6x+17y)^2=9/25х2+102/5ху+289у2
2)(9+1,1n)^2=81+99/5п+121/100п2
3)(3+13n)^2=169п2+78п+9
4)(7х+10y)^2=49х2+140ху+100у2
5)(m^3+10y)^2=м6+20м3у+100у2
6)(8a^2+1,5b^2)^2=64а4+24а2b2+9/4b4
7)(0,8+5a^2)^2=16/25+8а2+25а4
8)(1+0,7x^4)^2=7401/5000+7^8/10^8