Question

$(105) {}^{2}using(a + b) {}^{2}identity$
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Answer 1

Answer:

11025

Step-by-step explanation:

(a+b)² = a² + 2ab + b²

(105)²

= (100+5)²

= (100)² + 2(100)(5) + (5)²

= 10000 + 1000 + 25

= 11025