Question

solve this question

Answer 1

(1405+3)^2

= (1405)^2 + (3)^2 + 2×1405×3

= 1974025 + 9 + 8430

= 1982464

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Answer 2

(1405+3)^2
=1405^2+1405*2*3+3^2
=1982464