Find the positive number n, such that thrice its square is equal to twelve times the number
-
A.
1 -
B.
2 -
C.
3 -
D.
4
Correct Answer: Option D
Explanation
3n2 = 12n
= 3n2 – 12n = 0
= 3n(n – 4) = 0
∴ n = 4
3n2 = 12n
= 3n2 – 12n = 0
= 3n(n – 4) = 0
∴ n = 4