(x²-3X)÷(X-2)÷【(X+3)÷(2-X)】
=(x²-3X)/(X-2)÷【(X+3)/(2-X)】
=(x²-3X)/(X-2)*【((2-X)/(X+3)】
=(x²-3X)/(X-2)*【-(X-2)/(X+3)】
=-(x²-3x)/(x+3)
(x²-3X)÷(X-2)÷【(X+3)÷(2-X)】
=(x²-3X)/(X-2)÷【(X+3)/(2-X)】
=(x²-3X)/(X-2)*【((2-X)/(X+3)】
=(x²-3X)/(X-2)*【-(X-2)/(X+3)】
=-(x²-3x)/(x+3)