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What is the correct answer?

4

Simplify: [( 12.1 )2 - (8.1)2] / [(0.25)2 + (0.25)(19.95)]

A. 6

B. 3

C. 4

D. 8

Correct Answer :

C. 4


Given exp=[(12.1 + 8.1)(12.1 - 8.1)] / [(0.25)(0.25 + 19.95)]= (20.2 * 4) /( 0.25 * 20.2)   = 4 / 0.25 =400 / 25 =16=4
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