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What is the value of the discriminant, b2 − 4ac, for the quadratic equation 0 = x2 − 4x + 5, and what does it mean about the number of real solutions the equation has?

Respuesta :

We have been given an equation [tex]0 = x^2-4x + 5[/tex]. We are asked to find the discriminant of our given equation.    

We will use discriminant formula to solve our given problem.

[tex]D=b^2-4ac[/tex], where,

D = Discriminant,

b = Coefficient of x term,

a = Coefficient of [tex]x^2[/tex] term,

c = Constant.

[tex]D=(-4)^2-4(1)(5)[/tex]

[tex]D=16-20[/tex]

[tex]D=-4[/tex]

When D is less than 0, then equation has no real solutions.

When D is equal to 0, then equation one real solution.

When D is greater than 0, then equation has two real solutions.

Since [tex]-4[/tex] is less than 0, therefore, our given equation has no real solutions.