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 6 of 11.
Suganya said:
1 decade ago
Sathish said correct solution and take a time shortly to solve the problem.
Laxmi said:
7 years ago
What will be the answer, if a+b=5, a^2 + b^2 =30, Find b.
Anyone olve it.
Anyone olve it.
(1)
GH MUSTAFA said:
9 years ago
How can solve this a^2 + b^2 = 16 and (a - b)^2 = 4 then ab is equal to?
Tanim Ehsan said:
9 years ago
If a + b = 13 and ab = 3 then (a+2b)^2-5b^2 = ?
Simplify the solution.
Simplify the solution.
Rowwah said:
8 years ago
(a-b)^2 = a^2 + b^2 - 2ab,
(3)^2 = 29 - 2ab,
2ab = 29 - 9 = 20
ab = 10.
(3)^2 = 29 - 2ab,
2ab = 29 - 9 = 20
ab = 10.
Harshit shrivastava said:
8 years ago
Please solve my question.
If a + b = -5 find the value of a^3+b^3+125.
If a + b = -5 find the value of a^3+b^3+125.
Nripendra said:
8 years ago
If a2+b2=25 and ab=12 then find the value of a2-b2? Can anyone tell me?
(1)
Rushabh said:
8 years ago
log(a+b/2) = 1/2(loga+logb) so prove that a^2+b^2=4ab is that possible.
Sourav Das said:
8 years ago
If a+b = √5 & a-b= √3 than find the value of a2 + b2.
Harisha said:
10 years ago
Solve the problem if a+1/a-2=4. Find the value of (a-2)^2+(1/a-2)^2?
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