2. Functions

Completing The Square — Quiz

Test your understanding of completing the square with 5 practice questions.

Practice Questions

Question 1

What does completing the square do to a quadratic expression such as $x^2+6x+5$?

Question 2

Which expression is the completed-square form of $x^2+8x+7$?

Question 3

In the expression $x^2+10x+1$, what number must be added to make the quadratic part a perfect square?

Question 4

What is the vertex of the parabola $y=x^2-4x+1$?

Question 5

Which quadratic equation has solutions $x=1$ and $x=5$ after completing the square?