1+2+3-4+5-6+7=8
1+2×3×4+5-6-7-8 =9
1×2×3×4×5÷6+7-8-9 =10
=(3/(3/8))(cos(340-25)+isin(340-25))=8(cos315+isin315)=8(cos45+isin(-45)=8(cos(-45)+isin(-45))
<span>или =8(coren2 /2- icoren2 /2=4coren2(1-i)</span>
<span><span /><span>1-1)</span><span> - 205 < - 52</span></span>
<span><span /><span>1-2) 10 > - 48</span></span>
<span><span>2</span></span><span><span>-1) -31 ... -30 ... -29</span></span>
<span><span>2-2) -10 ... -9 ... -8
</span></span>