English, asked by palaksingh19, 11 months ago

simplify by using short method 729×9 observaing patterns

Answers

Answered by Anonymous

3

Explanation:

729 * 9

(81*9)*9

81*(9*9)

81 * 81

(81)² = (80+1)²

= (80)² + 2(80)(1) + (1)²

= 6400 + 160 + 1

= 6561

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