Aptitude - Simplification - Discussion
Discussion Forum : Simplification - General Questions (Q.No. 4)
4.
If a - b = 3 and a2 + b2 = 29, find the value of ab.
Answer: Option
Explanation:
2ab = (a2 + b2) - (a - b)2
= 29 - 9 = 20
ab = 10.
Discussion:
107 comments Page 9 of 11.
Rishabh said:
8 years ago
3^a, 5^-b, 15^c find 1/a-1/b-1/c. Please solve this.
Sunita said:
1 decade ago
Where did 9 come from?
How did we arrive at 29-9?
How did we arrive at 29-9?
Jay said:
1 decade ago
I dont get the fifth line. kindly explain better.
SMRUTI RANJAN said:
9 years ago
If a2 - b2 = 37, then a2 + b2 = ? Please explain?
Bhavana said:
1 decade ago
I didn't get the fifth line. Can you explain it.
Kanishka said:
8 years ago
If x+1/x=3, then find the value of x^3+1/x^3.
Sai said:
6 years ago
Can anyone explain this once again clearly?
(1)
Rachana said:
1 decade ago
Please explain the formula in explanation.
Btisso said:
2 years ago
How 3 has come? Anyone, please explain me.
(10)
Shilpi said:
8 years ago
I can't understand it, please explain me.
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