Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 138)
138.
{(476 + 424)2 - 4 x 476 x 424} = ?
Answer: Option
Explanation:
| Given Exp. | = [(a + b)2 - 4ab], where a = 476 and b = 424 |
| = [(476 + 424)2 - 4 x 476 x 424] | |
| = [(900)2 - 807296] | |
| = 810000 - 807296 | |
| = 2704. |
Discussion:
11 comments Page 2 of 2.
Shahid said:
2 decades ago
[(a + b)2 - 4ab]=[(a-b)^2]
From the above we have a=476 ,b=424
so Result is (476-424)^2
=52^2=2704
From the above we have a=476 ,b=424
so Result is (476-424)^2
=52^2=2704
(1)
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