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Solving Quadratics Review
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To solve by completing the square, what needs to be moved in this equation?
 
the -4x
 
the x²
 
the 9
 
nothing needs moved
What do you do to the b value to complete the square?
 
divide by 2 and square the result
 
divide by 2 and take the square root of the result
 
square it
 
divide by 2 only
What is the first step to solve this equation using completing the square?
 
subtract the 21
 
add the a² and a terms together
 
divide 10 by 2 and add the answer to both sides
 
set the equation equal to zero
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 number would you add to both sides of the equation to complete the square?
9
What number would you add to both sides of the equation to complete the square?
36
What number would you add to both sides of the equation to complete the square?
49
x = {+/- 10} or {-10, 10}
No Solution
x = {0}
No Solution
No Solution
No Solution
x = {0}
x = {0}
x = {0}
x = {+/-  1} or {-1, 1}
x = {+/- √5} or x = {-√5, √5}
x = {+/- √32}   or {+/- 4√2}
x = {+/- √2}
x = {+/- √15}
x = {+/- √50}  or  {+/- 5√2} or {-5√2, 5√2}
x = {+/- 5} or {-5, 5}
x = {+/- 9} or {-9, 9}
x = {+/- 7} or {-7, 7}
x = {+/- 3} or {-3, 3}
x = {+/- 8} or {-8, 8}
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