Question

using appropriately formula to find the value of (89x89)​

Answer 1

Answer:

6621

Step-by-step explanation:

80 +9 ka whole square

80 square +2*80*9+ 9 square

6400+140+81

6621

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Answer 2

Step-by-step explanation:

(100-11)

$(100 - 11) ^{2}$

${(100)}^{2} + {(11)}^{2} - 2 \times (100) \times (11)$

$10000 + 121 - 200 \times 11$

$10121 - 2200$

$7921$