Gio is solving the quadratic equation by completing the square.

5x2 + 15x - 4 = 0

What should Gio do first?

Isolate the constant.

Factor 5 out of the variable terms.

Isolate the variable x.

Add 9 to both sides of the equation.

If Gio is solving the quadratic equation by completing the square, he should

First, isolate the constant.

Next, is to factor 5 out of the variable terms. The whole equation can then be divided by 5.

Then, the resulting coefficient of x is divided by two and squared. This is added to both the left and right side of the equation.

The left side of the equation would be a perfect square trinomial.