Question

What is the value of the discriminant for the quadratic equation 0 = x + 2 + x2? Discriminant = b2 – 4ac

Answer 1

X2+x+2 is the given equaation  Now D=b2-4ac             =1-4×1×2             =1-8             =-7

Answer 2

Answer: The value of discriminant is -7.

Explanation:

The given equation is,

$x^2+x+2=0$

The standard form of the quadratic equation is,

$ax^2+bx+c=0$

By comparing the given equation with the standard equation we get,

a = 1, b = 1 and c = 2.

The Formula for discriminant is,

$D=b^2-4ac$

Substitute a = 1, b = 1 and c = 2,

$D=1^2-4(1)(2)$

$D=1-8$

$D=-7$

Therefore, the -7 is the value of the discriminant.