Solve by Completing the Square Practice

Front

What do you do to the b value to correctly complete the square?

Back

divide it by 2 and square the result

Front

Back

Subtract 21 from each side of the equation.

Front

Back

36

Front

Solve by completing the square:
k² − 12k + 23 = 0

Back

{6 + √13, 6 - √13}

Front

Back

Front

Back

Front

Which line contains a mathematical error when completing the square? Options: Line 1, Line 2, Line 3, Line 4, There is no error.

Back

Line 1

Front

The work above shows the first two steps to solve by completing the square. Which description correctly describes the error that was made? Options: They needed to add -1 to both sides., They needed to factor out the 2 so a = 1., They needed to take the square root of 4 first., They needed to add 4 to both sides.

Back

They needed to factor out the 2 so a = 1.

Front

Which line contains a mathematical error when completing the square?

Back

Line 2