Answer:
5:15
Step-by-step explanation:
Answer:
The answer to your question is 
Step-by-step explanation:
Here, there is a difference of squares, so just solve it and simplify

Multiply the binomials
= 1 - 
Simplify
= 
= 
General Idea:
The quadratic function of the form
.
Applying the concept:
Simplifying the equation in option A, we get...

Simplifying the equation in option B, we get...

Simplifying the equation in Option C, we get...

Simplifying the equation in Option D, we get

<u>Conclusion:</u>
Option B) & Option D) are quadratic equation!