Sunday

February 1, 2015

February 1, 2015

Posted by **Katie** on Thursday, April 3, 2008 at 6:36pm.

y=x^2-x-9

(x^2-2x)-9

complete the square

(x^2+2x+1-1)-9

(x^2+2x+1)-1-9

(x+1)^2-9

- Algebra -
**Reiny**, Thursday, April 3, 2008 at 6:51pm-1 - 9 = -10

also your -2x mysteriously turned into +2x

so

(x-1)^2 - 10

- Algebra -
**roro**, Thursday, April 3, 2008 at 6:54pmy= x^2 -x - 9

y=(x^2 -x + 0.5^2 - 0.5^2) -9 ; we get 0.5 by dividing 1 by 2)

y=(x^2 -x + 0.25) - 0.25 -9

y=(x-0.5)^2 - 9.25

- Algebra -
**Reiny**, Thursday, April 3, 2008 at 7:01pmroro is correct, I misread your question

- Algebra -

**Answer this Question**

**Related Questions**

Algebra 2 - Complete the square and write in graphing form. 2x^2=5x+12

Algebra 2 - Complete the square and write in graphing form. 2X^2=5x+12

Algebra - Complete the square to form a perfect square trinomial. X^2+4x+____ ...

Advanced Algebra - I some problems that I need help with please. Add or subtact ...

Another algebra - Write the equations of four lines that intersect to form a ...

Algebra (urgent!) - Write the equations of four lines that intersect to form a ...

urgent math - complete the square to write each function in the form f(x)=a(x-h...

Calculus - Complete the square to write the equation x^2 + y^2 - 6x - 2y + 4 = 0...

algebra 1 help - if the sides of the sqaure are represented by a and b what is ...

Algebra 2 -Conics - The directions are : Write each equation in standard form (...