(ah/a+h)²=1/4ah 怎样化简(a-h)²=0(ah/a+h)²=1/4ah 怎样化简(a-h)2=0
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(ah/a+h)²=1/4ah 怎样化简(a-h)²=0(ah/a+h)²=1/4ah 怎样化简(a-h)2=0
(ah/a+h)²=1/4ah 怎样化简(a-h)²=0
(ah/a+h)²=1/4ah 怎样化简(a-h)2=0
(ah/a+h)²=1/4ah 怎样化简(a-h)²=0(ah/a+h)²=1/4ah 怎样化简(a-h)2=0
因为(ah/a+h)²=1/4ah
所以
(ah)² / (a+h)² = 1/4 ah
两边同时乘以 (a+h)² 除以 ah
得(a+h)²=4ah
a²+h²+2ah=4ah
a²+h²-2ah=0
所以(a—h)²=0