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(
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
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(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）x²-10x+25+4x²+4x+1＞5x²-50 -6x＞-76 x＜28/3
2)①化为x²-4x+4-y²+6y-9=x²-y² 4x-6y+5=0 ③ 由②得x=3y+2代入③ 得y=-13/6 ,x=-9/2