Solving the equation
using completing square method we get 
So, Option A is correct.
Step-by-step explanation:
We need to solve the equation
using completing square method.
Solving using completing square method

For completing the square we need to make formula a^2-2ab+b^2=(a-b)^2
Divide the equations by 2


Adding and subtracting (3)^2 on both sides.



Solving the equation
using completing square method we get 
So, Option A is correct.
Keywords: Solving Quadratic Equation
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Answer:

Step-by-step explanation:
Use the x-swap-y method to find the inverse:

3v+2 = 7v-6
3v-7v = -6-2
-4v = -8
v = 2
then the length of QS = 3(2)+2 = 6+2 = 8
and the length of TV = 7(2)-6 = 14-6 = 8
An expression formed from operations such as addition, multiplication, powers and roots.
:)