Question

Evaluate: (9999)² with suitable identity.​

Answer 1

(9999)² = (100000-1)²

[ (a- b)² = a²-2ab+b²]

let a= 100000,b= 1

(100000-1)²=(100000)²-2.100000.1+(1)²

(100000-1)²= 100,000,000-20,000+1

99,980,001= 99,980,001

hence verified.

L.H.S=R.H.S

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Answer 2

Answer:

99,980,

Step-by-step explanation:

99,980,999 is the answer