Question

find square of 99 by using the identity bracket minus B bracket close square is equal to 2 minos2ab +b2​

Answer 1

Answer:

${99}^{2} \\ = > {(100 - 1)}^{2} \\ = > 10000 + 1 - 200 \\ = > 9801$

Answer 2

Answer:

9801

Step Explanation:

$99 = 100 - 1 \\ {99}^{2} = {(100 - 1)}^{2} \\ {99}^{2} = {100}^{2} - 2 \times 100 \times 1 + {1}^{2} \\ {99}^{2} = 10000 - 200 + 1 \\ {99 }^{2} = 9801$

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