1)<span>a2+2ab+b2</span>2)<span>a2-2ab+b<span>2
3)</span></span><span>a3+3a2b+3ab2+b<span>3
4)</span></span><span>a3-3a2b+3ab2-b<span>3
5)</span></span><span>(a+b)(a2-ab+b2)
6)</span><span>(a-b)(a2+ab+b2)</span>
6*3-8*2+3ху-4у=18-16+3х*(-3у)=2-3у*3х
58м=5,800см,2м3см=203см,300см=30дм0см,45см=4дм5см,115см=1м1дм5см