What are the solutions of the equation (2x + 3)2 + 8(2x + 3) + 11 = 0? use u substitution and the quadratic formula to solve.

Step-by-step explanation:

The question is  

We let , so the equation becomes:

Where

Putting it in the quadratic formula, we have:

Quadratic formula:

Substituting we have:

We let , so x is:

and

The solutions of the equation is (rounded to 2 decimal places), and (rounded to 2 decimal places)

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.