Study

Solving Quadratics Review

0%

0 0 0

x = {+/- 1} or {-1, 1}

x = {+/- √50} or {+/- 5√2} or {-5√2, 5√2}

No Solution

When do you use the +/- symbol?

after taking the square root of both sides

after taking half of b

after adding the square to both sides

after moving the c value to the other side

What would be the first step to solving this if you were using the completing the square method?

Dividing by 8

What is the first step to solve this equation using completing the square?

set the equation equal to zero

divide 10 by 2 and add the answer to both sides

add the a² and a terms together

subtract the 21

x = {+/- 9} or {-9, 9}

To solve by completing the square, what needs to be moved in this equation?

the -4x

the 9

nothing needs moved

the x²

x = {0}

x = {0}

No Solution

x = {+/- 10} or {-10, 10}

x = {+/- √32} or {+/- 4√2}

x = {+/- 3} or {-3, 3}

x = {+/- √5} or x = {-√5, √5}

x = {+/- 7} or {-7, 7}

x = {+/- 5} or {-5, 5}

x = {+/- √15}

x = {0}

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

divide by 2 only

square it

divide by 2 and square the result

divide by 2 and take the square root of the result

What number would you add to both sides of the equation to complete the square?

9

x = {+/- √2}

What number would you add to both sides of the equation to complete the square?

49

x = {0}

No Solution

No Solution

What number would you add to both sides of the equation to complete the square?

36

x = {+/- 8} or {-8, 8}