Question

Evaluate by suitable algebraic identity:
99²−98²​

Answer 1

Difference between consecutive square numbers is 2n+1 where n is the smaller number hence the answer is 2(998) +1 =197 hence 197 is your answer

Hope it helps

Answer 2

Step-by-step explanation:

(98+1)^2-98^2

98^2+1+2(98)-98^2

1+2(98)

1+196

197

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