Q. 23 G5.0( 2 Votes )

If one of the roots of kx2 — 7x + 3 = 0 is 3, then k =
A. —2

B. 3

C. —3

D. 2

Answer :

3 is a root

k(3)2 – 7(3) + 3 = 0

9k – 21 + 3 = 0

9k = 18

k = 2

(A) doesn’t match the solution.

(B) doesn’t match the solution.

(C) doesn’t match the solution.

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