Completing the square Quiz
10 questions · easy to harder · Algebra 1 · score and step-by-step answers
How it works
- 10 questions, about 20 minutes (a timer counts down; you can hide it). Solve it right here: no sign-up.
- 3 questions have choices. For the others you type the answer: a number like 4, −2, 7/2 or 3.5, or for example x = 4, x = 2 or x = −3, (3, 5), 2x + 1. Use ^ for powers (x^2) and sqrt for √. Any form with the same value counts (7/2 = 3.5).
- One question at a time: Back, Next, Mark for review and the question list at the bottom. A calculator is on the screen.
- At the end: your percent and grade, every question right or wrong, why a wrong choice is wrong, and its step-by-step solution. Then practise the lesson with new questions.
Your answers and results are kept in this browser only, so you can close the page and come back.
1 Question 1
Solve x2 + 6x = 7 by completing the square- A) x = 1
- B) x = −1 or x = −7
- C) x = −1 or x = 7
- D) x = 1 or x = −7
2 Question 2
Solve x2 + 4x = 5 by completing the squareType the answer.
3 Question 3
Solve x2 + 8x = 9 by completing the square- A) x = 1
- B) x = −1 or x = −9
- C) x = −1 or x = 9
- D) x = 1 or x = −9
4 Question 4
Solve x2 + 2x = 8 by completing the squareType the answer.
5 Question 5
Complete the square: x2 + 10x + 21 = 0. Find x.- A) x = −3 or x = −7
- B) x = −3
- C) x = 3 or x = −7
- D) x = 3 or x = 7
6 Question 6
Solve x2 − 8x + 13 = 0 by completing the squareType the answer.
7 Question 7
Solve x2 + 6x + 2 = 0 by completing the squareType the answer.
8 Question 8
Solve x2 − 10x = −16 by completing the squareType the answer.
9 Question 9
Solve x2 + 2x − 1 = 0 by completing the squareType the answer.
10 Question 10
Solve x2 + 12x + 20 = 0 by completing the squareType the answer.