Rewrite the equation by completing the square.
x^2+12x+36 = 0
(x+)^2=

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

you need to rotate this triangle about the origin 270 degrees clockwise to create the full square.

answer is  

a.

5.56

hope you get this right.