Aptitude | Algebra | Question 4

If 5^√x +12^√x =13^√x then value of x is,
(A) 2
(B) 1
(C) 3
(D) 4


Answer: (D)

Explanation: say x=1
17!=13

for, x=2 and 3 also not possible

x=4

52+122=132

169=169


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