Question

The value of $k$ for which $3$ is a root of the equation $k{x}^2-7x+3=0$ is

• A. $2$
• B. $-2$
• C. $3$
• D. $-3$

Answer 1

The correct option is A $2$

Given equation is: $k{x}^2-7x+3=0$
$3$ is the root of the equation

$\therefore k(3{)}^2-7(3)+3=0$
$\Rightarrow 9k-21+3=0$
$\Rightarrow 9k=18$
$\Rightarrow k=2$