anonymous one year ago help

1. anonymous

|dw:1440162501476:dw| The rectangle below has an area ofx^2-6x-7 square meters and a width of x-7 What expression represents the length of the rectangle? length= meters

2. anonymous

i dont understand am i suppose to do the equation and find the answer

3. Jhannybean

$A= l\cdot w \iff l = \frac{A}{w}$

4. anonymous

honlan salang e daehan sin

5. Jhannybean

Sorry, don't understand korean :\

6. Jhannybean

Is that korean?

7. anonymous

i dont think im supose to find the area just the length=? meters and sorry

8. anonymous

and yes

9. Jhannybean

To make things easier, factor out $$x^2-6x-7$$

10. anonymous

swibsali

11. Jhannybean

Well, in your answer you will have an expression for the length, as in length = equation.

12. anonymous

in meters like this|dw:1440162954761:dw|

13. anonymous

u jeongmal ilh-eoss-eoyo

14. Jhannybean

yes, so if $$l= \dfrac{A}{w}$$ and $$A = x^2-6x-7$$, how can we factor $$x^2-6x-7$$ ?

15. anonymous

(x−7)(x+1)?

16. anonymous

olbaleun gwonli

17. anonymous

@Jhannybean