-2(x^2+6x)= 12 Now complete the square
-2( x+3)^2 + 18 = 12. You have to add 18 to the left side because when you converted it to a square you added-18 so you have to put a +18 in so as not to change the value of the expression
so -2(x+3)^2 +6= 0
So q= 6