lim x → 2 x 3 + 2 x + 3 x 2 + 5 = {\displaystyle \lim _{x\to \ 2}{\sqrt {\frac {x^{3}+2x+3}{x^{2}+5}}}=}
lim x → 3 ( x 2 + 7 x − 5 ) = {\displaystyle \lim _{x\to \ 3}(x^{2}+7x-5)=}
lim x → 4 x − 2 x − 4 = {\displaystyle \lim _{x\to \ 4}{\frac {{\sqrt {x}}-2}{x-4}}=}
