Gate
Exam
Numerical Ability
If a - b = 3 and a2 + b2 = 29, find the value of ab.
A. 10
B. 12
C. 15
D. 18
Read Solution (Total 1)
a=b+3
(a+3)^2 + b^2=29
b=2, a=5
ab=10
8 years ago
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