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Solve (41. 99^2-18. 04^2)-:?=13. 11^2-13...

Solve `(41. 99^2-18. 04^2)-:?=13. 11^2-138. 99` (a) 48 (b) 12 (c) 72 (d) 84 (e) 128

A

4004

B

1200

C

1720

D

1110

Text Solution

Verified by Experts

The correct Answer is:
D
`(41.99^(2)-18.04^(2))-?=13.11^(2)-138.99`
`rArr (42^(2)-18^(2))-?=(13)^(2)-139`
`rArr {(42+18)(42-18)(42-18)}-?=169-139`
`{60xx24}-?30`
`rArr 1140-?=30`
`rArr ?=1110`
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