Help please within the next hour Amira is solving the equation x2 – 6x = 1. Which value must be added to both sides of the equation to make the left side a perfect-square trinomial?
a. –9
b. 8
c. 9
d. 36

c. 9

To complete the square, you take half of the coefficient of b and square it. It's important to note that the value being added will always be positive.

asdfghkl

step-by-step explanation:

asdfghkl

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!