Question

If x² + kx-3= (x-3) (x+1)
then find the value of K.​

Answer 1

${\underline{\underline{\huge{\mathfrak{\green{Answer:-}}}}}}$

Hey Mate!!

x² + kx - 3 = (x - 3)(x + 1)

Let's multiply the factors first.

→ (x - 3)(x + 1)

→ x² + x - 3x - 3

→ x² - 2x - 3

On comparing x² + kx - 3 and x² - 2x - 3, we get k = (-2).

Answer 2

Answer:

k=-2

Step-by-step explanation:

x^2+kx-3=(x-3)(x+1)

x^2+kx-3=x^2+x-3x-3

x^2+kx-3-x^2-x+3x+3=0

kx+2x=0

x(k+2)=0

k+2=0

k=-2