Question

State true or false:

If $x=4$ is the solution of the equation $3x^2+kx-2=0$, then the value of $k=\frac{-23}{2}$.

• A. True
• B. False

Answer 1

The correct option is A True

Putting $x=4$ in the given equation $3x^2+kx-2=0$, we get

$3(4{)}^2+k(4)-2=0$
$48+4k-2=0$
$4k=-46$
$\therefore k=\frac{-23}{2}$