Hello :-)

I have no idea why this is going wrong:

0 = -3^2 - 4*2*x

3^2 = -4*2*x

9 = -4*2*x

9 / (-4*2) = x

x = -1.125

it should be 1.125 :S not negative

Printable View

- January 27th 2013, 06:20 AMAssassinbeastHow do i solve this easy equation?
Hello :-)

I have no idea why this is going wrong:

0 = -3^2 - 4*2*x

3^2 = -4*2*x

9 = -4*2*x

9 / (-4*2) = x

x = -1.125

it should be 1.125 :S not negative

- January 27th 2013, 06:59 AMa tutorRe: How do i solve this easy equation?
You got it right.

- January 27th 2013, 10:42 AMAssassinbeastRe: How do i solve this easy equation?
no i didn't... try to put -1.125 at the x position, and its wrong

- January 27th 2013, 11:46 AMmathmansamRe: How do i solve this easy equation?
I think the issue is that it is (-3)^2. This makes 9. So instead of adding 3^2 to both sides in your first algebraic step, you should subtract 9. This will alleviate the negative issue.

Hope this helps! - January 27th 2013, 01:33 PMa tutorRe: How do i solve this easy equation?
Maybe, but it says -3^2 and that is -9.

Do we have to guess what people are asking? - January 27th 2013, 03:16 PMAssassinbeastRe: How do i solve this easy equation?