September 2021 1 19 Report
Выделите полный квадрат:

121m²-44mn+16n².


1)(5m-3n)²+15mn

2)(11m-4n)²+44mn

3)(m³+2n)²+2m⁶

4)(5m-3n)²-15mn

5)(5m-4n)²-20mn
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