Giải hệ phương trình \(\left\{ {\begin{array}{*{20}{c}}{3\left( {x + 2} \right)\sqrt {x – y} = y\sqrt {x – y} + 3x – y + 6\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\left( 1 \right)\,\,\,\,\,\,}\\{\sqrt {3x + 1} – \sqrt {5 – y} = – {x^3} + 5{x^2} + 3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\left( 2 \right)\,\,\,}\end{array}} \right.\)

Giải hệ phương trình \(\left\{ {\begin{array}{*{20}{c}}{3\left( {x + 2} \right)\sqrt {x – y}  = y\sqrt {x – y}  + 3x – y + 6\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\left( 1 \right)\,\,\,\,\,\,}\\{\sqrt {3x + 1}  – \sqrt {5 – y}  =  – {x^3} + 5{x^2} + 3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\left( 2 \right)\,\,\,}\end{array}} \right.\) Lời giải Điều kiện: \(\left\{ {\begin{array}{*{20}{c}}{x – y \ge 0}\\{5 – […]

from Sách Toán – Học toán https://ift.tt/2XESL8F
Xem Sach toan - hoc toan