Follow the process of completing the square to solve 2x2 + 8x - 12 = 0. after adding b2 to both sides of the equation in step 4, what is the constant on the right side of the equation?

Group terms that contain the same variable, and move the constant to the opposite side of the equation
(2x² + 8x)=12 

Factor the leading coefficient 

2*(x² + 4x)=12 > divide by 2> (x² + 4x)=6

Complete the square. Remember to balance the equation by adding the same constants to each side

(x² + 4x+4)=6+4

(x+2)²=10

the constant on the right side of the equation is 10

-2 is the right