Question

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.

Answer 1

Answer: A Isolate the constant

Explanation:

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Answer 2

Gio should isolate the constant first.

When completing the square, you want your equation to be Ax^2 + Bx = C to complete the square. Then, you can factor out the 5, complete the square of (x^2 + 3) and so on.