Question

(99)^2
Solve by using suitable identity​

Answer 1

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(99)²

=(100-1)²

= 100² + 1² - 100×1×2

= 10000 + 1 -200

= 10000 - 199

= 9801

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...Hope it helps....

Answer 2

Step-by-step explanation:

(100-1)² { (a-b)²=a²+b²-2ab}

(100)²+(1)²-2.100.1

10000+1-200

10001-200

9801

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