Back
to top
completing the square
Watch
Announcements
Page 1 of 1
Go to first unread
Skip to page:
can someone please help me with questions for completing the square. Thank you!!
0
reply
Report
#3
I hope you can see the image I have sent.
Step 1) Whenever there is a number infront of an ‘x’ you can half it and put it in the brackets of (x ...)^2 Where the “...” is the halved number.
Step2) using this halved number e.g 3 (from the image, we always subtract the square of it. So in this case 3 squared is 9 so we add “-9” to our equation.
Finally we bring down the constant “10” or anything that isn’t with an ‘X’ with it.
We can then do -9 10 giving us -1.
Therefore our final equation is :
(x 3)^2 -1
Step 1) Whenever there is a number infront of an ‘x’ you can half it and put it in the brackets of (x ...)^2 Where the “...” is the halved number.
Step2) using this halved number e.g 3 (from the image, we always subtract the square of it. So in this case 3 squared is 9 so we add “-9” to our equation.
Finally we bring down the constant “10” or anything that isn’t with an ‘X’ with it.
We can then do -9 10 giving us -1.
Therefore our final equation is :
(x 3)^2 -1
Last edited by 14ahussainAH; 1 month ago
0
reply
Report
#5
0
reply
Report
#6
(Original post by mqb2766)
+1 at the end?
https://www.mathsisfun.com/algebra/c...ng-square.html
Is pretty good.
+1 at the end?
https://www.mathsisfun.com/algebra/c...ng-square.html
Is pretty good.
0
reply
Report
#7
(Original post by 14ahussainAH)
What do you mean by +1 at the end? There isn’t a +1
What do you mean by +1 at the end? There isn’t a +1
0
reply
Report
#8
(Original post by mqb2766)
When you expand your answer, what do you get?
When you expand your answer, what do you get?
0
reply
Report
#9
Just to make it clear I made a mistake. And the following image is the correct one.
0
reply
X
Page 1 of 1
Go to first unread
Skip to page:
Quick Reply
Today on TSR
-
Have your say on 2021 assessmentOfqual and DfE want students' thoughts
- Applying to uni? Chat to others here
- Struggling with lockdown uni work
- Win a year of Headspace
- US election - Biden inauguration today