Completing The Square
Presentation
•
Mathematics
•
10th - 11th Grade
•
Hard
Standards-aligned
Kylie Sato
Used 11+ times
FREE Resource
5 Slides • 6 Questions
1
Miss Sato
2
3
4
Fill in the Blanks
What number should replace the . . . ?
x2+4x−12=0
x2+4x=12
x2+4x+… =12 +…
Type answer...
5
Multiple Choice
What should the next step be?
x2+4x−12=0
x2+4x=12
x2+4x+4 =12 +4
(x+2)(x+2)=16
(x+2)2=16
Take the square root
Subtract 2 from both sides
Expand (x+2)(x+2)
Move 16 back to the left side and set equation = 0
6
Fill in the Blanks
Solve for x.
x2+4x−12=0
x2+4x=12
x2+4x+4 =12 +4
(x+2)(x+2)=16
(x+2)2=16
(x+2)2= ±16
x+2=±4
( Answer with no spaces: x={#,#} )
Type answer...
7
****If 'a' is not equal to 1,
then divide everything by 'a.'****
Then follow the steps for completing the steps.
Watch the video to the right.
8
Multiple Choice
Is a=1 in the following equation?
5x2−10x−15=0
Yes
No
9
Multiple Select
After dividing out 'a' which equation is correct?
5x2−10x−15=0
***There are two correct answers***
x2−10x−3=0
x2−2x−3=0
x2−2x=3
x2+2x+3=0
10
Fill in the Blanks
Given the following equation
5x2−10x−15=0
x2−2x=3
Solve for x by completing the square.
(Type Answer as x={#,#} )
Type answer...
11
Study Your Notes!
Miss Sato
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