Ответ:
1) а²+8а+16= (а+4)²
2)9х²-6х+1 = (3х-1)²
3)121m²-88mn+16n²=(3x-1)²
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Ответ:
1) а²+8а+16= (а+4)²
2)9х²-6х+1 = (3х-1)²
3)121m²-88mn+16n²=(3x-1)²