Question

What should be added to 9x²-12x to make it a perfect sqaure?​

Answer 1

Answer:

+, - 16.......hope it helps

Answer 2

Steps

Step 1 Divide all terms by a (the coefficient of x2).

Step 2 Move the number term (c/a) to the right side of the equation.

Step 3 Complete the square on the left side of the equation and balance this by adding the same value to the right side of the equation.