Question

To solve the equation below by completing the square, what is your first step?
3x^2+18x=21

Answer 1

Multiply both sides of the equation by 1/3

Explanation:

3x^2+18x=21

The first step is to get the x term with a coefficient of 1, so divide by 3 on both sides of the equation

This is the same as multiplying by 1/3

1/3 * (3x^2+18x)=21*1/3

x^2 +6x = 7