Question

6.Evaluate-(81)2(19)​

Answer 1

Answer:

6200

PLS MARK IT AS BRAINLIST

Step-by-step explanation:

Hey your ans is here

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given

(81)2-(19)2

this is forming identity

a2-b2=(a+b)(a-b)

so

(81)2-(19)2=(81+19)(81-19)=(100)(62)

so

answer is 6200

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