Aptitude - Decimal Fraction - Discussion
Discussion Forum : Decimal Fraction - General Questions (Q.No. 1)
1.
| Evaluate : | (2.39)2 - (1.61)2 |
| 2.39 - 1.61 |
Answer: Option
Explanation:
| Given Expression = | a2 - b2 | = | (a + b)(a - b) | = (a + b) = (2.39 + 1.61) = 4. |
| a - b | (a - b) |
Discussion:
21 comments Page 1 of 3.
Danny sawkmie said:
1 decade ago
Iven Expression = a2 - b2 = (a + b)(a - b) = (a + b) = (2.39 + 1.61) = 4.
a - b (a - b)
Explain clearly
a - b (a - b)
Explain clearly
Aptitute said:
1 decade ago
Given Expression = a^2 - b^2 = (a + b)(a - b).
(a^2 - b^2)/(a - b) = (a + b) = (2.39 + 1.61) = 4.
(a^2 - b^2)/(a - b) = (a + b) = (2.39 + 1.61) = 4.
Mary Grace said:
1 decade ago
Can you explain this clearly? Please.
Praveen kumar said:
1 decade ago
2.39*2.39 = 5.7121.
1.61*1.61 = 2.6565.
2.39-1.61 = 0.78.
Its nothing 5.7121-2.6565/0.78 = 4.
1.61*1.61 = 2.6565.
2.39-1.61 = 0.78.
Its nothing 5.7121-2.6565/0.78 = 4.
Manas kumar patra said:
1 decade ago
Can you explain how (a+b)(a-b)/(a-b)=a+b?
Suni said:
10 years ago
(a+b)(a-b)/(a-b), its simple division where a-b gets cancelled an that = a+b.
Franky said:
9 years ago
This is easy, just (a + b)(a - b)/(a - b).
Then just by cancelling the both minus and remaining a+b is the answer.
Formula : (a^2) - (b^2) = (a + b)(a - b)/a - b.
Enter the amount: (2.39 + 1.61)(2.39 - 1.61)/2.39 - 1.69).
Cancel both 2.39 - 1.61)/(2.39 - 1.69).
Then remaining in the numerator is 2.39 + 1.61 = 4.
So, the answer is 4.
Then just by cancelling the both minus and remaining a+b is the answer.
Formula : (a^2) - (b^2) = (a + b)(a - b)/a - b.
Enter the amount: (2.39 + 1.61)(2.39 - 1.61)/2.39 - 1.69).
Cancel both 2.39 - 1.61)/(2.39 - 1.69).
Then remaining in the numerator is 2.39 + 1.61 = 4.
So, the answer is 4.
Sabit said:
9 years ago
How did the 2nd step come?
Mahesh said:
8 years ago
Good explanations, Thank you all.
Sindhu said:
8 years ago
Not getting this. Please Explain me clearly.
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