<span><span>1 / (tg(44) + 0,01)<span> = </span>1,02491698769</span><span>
</span></span>
√48=4<span>√3
</span>
2√3+√5-√13+4<span>√3
6</span>√3+√5-√13
1)m/[(m-3)(m+3)]:m/(m+3)=m/[(m-3)(m+3)] * (m+3)/m=1/(m-3)
2)(21-5m)/[(m-3)(m+3)]-1/(m-3)-(m-3)/(m+3)=
=(21-2m-m-3-m²+6m-9)/(m²-9)=(9-m²)/(m²-9)=-1