Câu 7:
Tìm giới hạn B=limx→+∞xx2+1−2x+12x3−23+1B=\lim \limits_{x \rightarrow+\infty} \frac{x \sqrt{x^{2}+1}-2 x+1}{\sqrt[3]{2 x^{3}-2}+1}B=x→+∞lim32x3−2+1xx2+1−2x+1
