<span>∫<span>x<span><span>x−1</span><span>−−−−</span>√</span></span>dx=<span><span><span><span>x−1</span><span>−−−−</span>√</span><span>(<span>2x+4</span>)</span></span>3
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1) 1 1/4-5/14=1 (7-10)/28=(35-10)/28=25/28 ;
2) 25/144;
3) 25/28: 25/144=(25*144)/(28*25)=36/7=5 1/7;
4) 5/14+18/35=(25+36)/70=61/70;
5) 61/70+5 1/7= 5 (61+10)/70=5 71/70=6 1/70 ...
27℅ от 13 это 27•13:100=3,51
13℅ от27 это 13•27:100=3,51