Question

4 If x=4 is one of the roots of the quad
equation 3x2 + kx - 2 = 0, find the value of k​

Answer 1

Answer:

$3 \times 4 ^{2} + k \times 4 - 2 = 0$

$48 + 4k - 2 = 0$

$46 + 4k = 0$

$4k = - 46$

$k = - 11.5$

Answer 2

Explanation:

3x4+kx4-2=0

kx4-2=0/12

k×4=0+2

k=2/4

k=1/2