\(=47.69-31.47.\left(-1\right)\\ =47.\left(69+31\right)\\ =47.100=4700\)

\(lim_{x->1^-}=\dfrac{2x+1}{x-1}\)

\(lim_{x->6}=\dfrac{\left(5x-4\right)\sqrt{2x-3}+x-84}{x-6}\)

\(lim_{x->-\infty}\left(\sqrt{x^2+1}+x-1\right)\\ lim\dfrac{\sqrt{4n^2+n-1}+n}{\sqrt{n^4+2n^3-1}-n}\)

Tìm giới hạn dãy số :

\(a,lim\dfrac{5n+1}{2n}\\ b,lim\dfrac{6n^2+8n+1}{5n^2+3}\\ c,lim\dfrac{3^n+2^n}{4.3^n}\\ d,lim\dfrac{\sqrt{n^2+5n+3}}{6n+2}\)

A\B = \(\left\{0;1\right\}\)

B\A= \(\left\{5;6\right\}\)

(A\B) \(\cap\) (B\A) = \(\varnothing\)

\(\left(-6x^2y^2+6x^3y^2\right)-\left(6x^3y^2+3x^4y^2\right)\\ =-6x^2y^2+6x^3y^2-6x^3y^2-3x^4y^2\\ =\left(-6x^3y^2+6x^3y^2\right)-6x^2y^2-3x^4y^2\\ =-6x^2y^2-3x^4y^2\)