If a2 + b2 = 4b + 6a - 13, then what is the value of a + b?
A. 3
B. 2
C. 5
D. 10
Answer: Option C
Solution(By Examveda Team)
a2 + b2 = 4b + 6a - 13a2 + 9 - 3a + b2 + 4 - 4b = 0
(a - 3)2 + (b - 2)2 = 0
a = 3, b = 2
a + b = 5
This Question Belongs to Arithmetic Ability >> Algebra
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