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Solving Quadratics Review

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

x = {+/- √15}

x = {0}

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

the -4x

nothing needs moved

the 9

the x²

No Solution

x = {0}

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

x = {+/- √32} or {+/- 4√2}

No Solution

When do you use the +/- symbol?

after moving the c value to the other side

after taking half of b

after taking the square root of both sides

after adding the square to both sides

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

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

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

9

x = {0}

x = {+/- √5} or x = {-√5, √5}

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

square it

divide by 2 and take the square root of the result

divide by 2 only

divide by 2 and square the result

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

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

add the a² and a terms together

subtract the 21

divide 10 by 2 and add the answer to both sides

set the equation equal to zero

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

36

No Solution

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

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

49

No Solution

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

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

Dividing by 8

x = {+/- √2}

x = {0}

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