求此题正解!加急!加急!

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求此题正解!加急!加急!求此题正解!加急!加急! 求此题正解!加急!加急!证明:左边=100X^2+100X+10XY-10XY+10Y-Y^2=100X^2+100X+10Y-Y^2=10

求此题正解!加急!加急!
求此题正解!加急!加急!
 

求此题正解!加急!加急!
证明:
左边=100X^2+100X+10XY-10XY+10Y-Y^2
=100X^2+100X+10Y-Y^2
=100X(X+1)+Y(10-Y)
=右边
证明完毕
98*92
10X+Y=98;
10X-Y=82;
求得:
X=9;
Y=8;
带入右边求得
结果为9016
求好评啊