Friday
April 17, 2015

Homework Help: math

Posted by kayla on Thursday, July 12, 2007 at 5:13pm.

x^2-9x-4=6
solve by completing the square
show steps plz :D

Add 4 to both sides. What is 1/2 of -9? Then square that, and add it to both sides.

Now, on the left, you have a perfect square.. (x-9/2). Take the square root of each side. Remember the right side will be +-.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

algrebra 2 - it is called completing the square here is the equation 4x^2-4x+1=9...
Math - urgent - When solving for x by completing the square as in the equation 3...
algebra - how do I do this Solve for x. 3x 2y = 6 Add 2y to both sides and ...
science - rearrange this equation 2 make x the subect. 6y = 9 - 3x so first i ...
precal - how in the world do you solve this... 4cos^2x -3 =0 add three to both ...
I need help with algebra ASAP! - I'm in Algebra 1 this year and I really need ...
Inter. Algebra - I find it curious here: a - b=2 in this case, rationalize by ...
algerbra 1 - what is the answer to 5x-16=14-5x Just giving you the answer is not...
Pre Cal.--Check my work? - Solve the system of equations: x - y - z = 2; x + 2y...
Pre Algebra - Here is another one I need help with. -5x+20=-60 ( remember it is ...

Members