Question

if one root of quadratic equation 2x2+kx-6=0 is 2 find value of k and also find other root

Answer 1

2(2)^2+k(2)-6
2.4+2k-6
8+2k-6
2+2k
2(1+k)=0
1+k=0
k=-1

Answer 2

HELLO DEAR,

given that

It's one zeros

So x = 2 put this in Quadratic Equation

We get,

⇒2x² + kx - 6 = 0

⇒2(2)² + k(2) - 6 = 0

⇒8 + 2k - 6 = 0

⇒2k = -2

⇒k = - 1

I HOPE ITS HELP YOU DEAR,
THANKS