Question

x^2 +4x+(k+2)=0 if one root is 0 find the value of k​

Answer 1

Answer:

given,

x^2+4x+k+2=0

one of the root of the above equation is zero

x=0

there fore

0+0+k+2=0

=>k=-2

Answer 2

AnsWer :

k = - 2.

GiveN :

• x² + 4x + ( k + 2 ) = 0.
• One roots is 0.

To FinD :

The value of K.

SolutioN :

We have, Quadratic Equation.

→ x² + 4x + ( k + 2 ) = 0.

☛ Compare With General Equation.

→ ax² + bx + c = 0.

Where as,

• a = 1.
• b = 4.
• c = k + 2.

$\rule{90}2$

Let,

• f( x ) = 0.

So,

→ x² + 4x + ( k + 2 ) = 0.

→ ( 0 ) ² + 4( 0 ) + ( k + 2 ) = 0.

→ k + 2 = 0.

→ k = - 2.

✡ Therefore ,the value of k is - 2.