方程题(x-5)^2+(-2X-1)^2>5(X^2-10)(x-5)^2+(-2X-1)^2>5(X^2-10)解方程 （X-2)^2-(Y-3)2=(X+Y)(X-Y)①﹛(X-3Y=2 ②
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方程题(x-5)^2+(-2X-1)^2>5(X^2-10)(x-5)^2+(-2X-1)^2>5(X^2-10)解方程（X-2)^2-(Y-3)2=(X+Y)(X-Y)①﹛(X-3Y=2②方程题(x
方程题(x-5)^2+(-2X-1)^2>5(X^2-10)(x-5)^2+(-2X-1)^2>5(X^2-10)解方程 （X-2)^2-(Y-3)2=(X+Y)(X-Y)①﹛(X-3Y=2 ②
方程题(x-5)^2+(-2X-1)^2>5(X^2-10)
(x-5)^2+(-2X-1)^2>5(X^2-10)
解方程 （X-2)^2-(Y-3)2=(X+Y)(X-Y)①
﹛
(X-3Y=2 ②
方程题(x-5)^2+(-2X-1)^2>5(X^2-10)(x-5)^2+(-2X-1)^2>5(X^2-10)解方程 （X-2)^2-(Y-3)2=(X+Y)(X-Y)①﹛(X-3Y=2 ②
(1) (x-5)²+(-2X-1)²>5(X²-10)
x²-10x+25+4X²+4x+1>5X²-50
-6x>-76
x
合并