-2x^2+5x-4=0 , find the discriminant

The discriminant is -7

Step-by-step explanation:

The discriminant of a quadratic function/equation(ax^2+bx+c = 0) is calculated as:

Here

b is the co-efficient of x

a is the co-efficient of x^2

and c is the constant

Given equation is:

Here

a = -2

b = 5

c = -4

Putting the values in the formula for discriminant

As the discriminant is negative, the equation has no real solution.

Hence,

The discriminant is -7

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.