1)4х²-4ха+а²
2)у²-1/16х²
(2х-а)²=4x²-4xa+a²
(у+1/4 х) (у-1/4х)=y²-1/16x²
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1)4х²-4ха+а²
2)у²-1/16х²
(2х-а)²=4x²-4xa+a²
(у+1/4 х) (у-1/4х)=y²-1/16x²