1.

121 a square - 88 a b + 16 b square​

Answer»

ANSWER:

121 {a}^{2}  - 88ab +  16 {b}^{2}  =  \\  {(11a)}^{2}  - 2 \times 11a \times 4b +  {(4b)}^{2}  =  \\  {(11a - 4b)}^{2}



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