consider the steps for solving 3x^2-42x+9=-5 for x.
Step 1: 3x^2-42x=-14
Step 2: 3(x^2-14x)=-14
Step 3: 3(x^2-14x+49)=-14+_
What number should be added to the right side of the equation
to complete the square?
yes
To complete the square, you need to add half of the coefficient of x (the number in front of x) squared. In this case, the coefficient of x is -14, so half of -14 is -7, and -7 squared is 49. Therefore, you should add 49 to the right side of the equation.
wrong the choices are
96
147
225
441