Giải giùm tui bài 6 với ạ ! Đang cần gấp
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VI
1 scientist
2 scientism
3 interesting
4 to take
5 would be
6 don't
7 flying
8 had
9 unidentified
10 imagination
11 interested
12 electricity
13 evidence
14 at - on
15 entertainment
16 were
17 would write
18 appearance
\(=\lim\left(\sqrt[3]{n^3-2n}\left(\sqrt[]{n^2+n}-n\right)+n\sqrt[3]{n^3-2n}-n^2\right)\)
\(=\lim\left(\dfrac{n\sqrt[3]{n^3-2n}}{\sqrt[]{n^2+n}+n}-\dfrac{2n^2}{\sqrt[3]{\left(n^3-2n\right)^2}+n\sqrt[3]{n^3-2n}+n^2}\right)\)
\(=\lim\left(\dfrac{n\sqrt[3]{1-\dfrac{2}{n^2}}}{\sqrt[]{1+\dfrac{1}{n}}+1}-\dfrac{2}{\sqrt[3]{\left(1-\dfrac{2}{n^2}\right)^2}+\sqrt[3]{1-\dfrac{2}{n^2}}+1}\right)\)
\(=+\infty-\dfrac{2}{3}=+\infty\)
\(A=15x^2y^3+7x^2-8x^3y^2-12x^2+11x^3y^2-12x^2y^3.\\ A=3x^2y^3-5x^2+3x^3y^2.\)
\(\rightarrow\) Bậc: 3.
\(B=3x^5y+\dfrac{1}{3}xy^4+\dfrac{3}{4}x^2y^3-\dfrac{1}{2}x^5y+2xy^4-x^2y^3.\\ B=\dfrac{5}{2}x^5y+\dfrac{7}{3}xy^4-\dfrac{1}{4}x^2y^3.\)
\(\rightarrow\) Bậc: 5.