\(\left\{{}\begin{matrix}\left(x+y\right)\left(x^2+y^2\right)=15\\\left(x-y\right)\left(x^2-y^2\right)=3\end{matrix}\right.\)

(x+1)(x+2)(x+4)(x+8)=28\(x^2\)

\(\left\{{}\begin{matrix}x-y+\sqrt{x}=\sqrt{y}\\x+y+18\sqrt{xy}=4\sqrt{x}+3\sqrt{y}+13\end{matrix}\right.\)

\(\left\{{}\begin{matrix}y^2-y\left(\sqrt{x-1}+1\right)+\sqrt{x-1}=0\\x^2+y-\sqrt{7x^2-3}=0\end{matrix}\right.\)

\(\left\{{}\begin{matrix}\sqrt{x}+\sqrt{y}+4\sqrt{xy}=16\\x+y=10\end{matrix}\right.\)

Trong các số thập phân sau, số nào lớn nhất: 41,853; 42,358; 41,538; 42,53.

A. 41,853;

B. 42,358;

C. 41,538;

D. 42,53.