Solve quadratic Equations using completing the Square

Front

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

Back

divide it by 2 and square the result

Front

To solve by completing the square, what needs to be moved in this equation?
x² = 9 - 4x

Back

the -4x

Front

First step to solve by completing the square: a² + 10a + 21 = 0

Back

Subtract the 21

Front

When factoring
x² - 4x + 4 = 20,
what goes in the blank?
(x - __ )² = 20

Back

2

Front

When do you use the plus or minus symbol (±)?

Back

After taking the square root of both sides

Front

Complete the Square
x² + 6x = 5

Back

(x + 3)² = 14

Front

Complete the square for
x² + 12x + ____

Back

x² + 12x + 36

Front

Complete the square for the expression: x² + 6x + ____

Back

x² + 6x + 9

Front

Solve for x: (x+6)² = 49

Back

x = 1 and -13

Front

Solve the equation using square roots: x² = 121

Back

x = ± 11