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OpenStudy (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
OpenStudy (anonymous):
i dont understand am i suppose to do the equation and find the answer
OpenStudy (jhannybean):
\[A= l\cdot w \iff l = \frac{A}{w}\]
OpenStudy (anonymous):
honlan salang e daehan sin
OpenStudy (jhannybean):
Sorry, don't understand korean :\
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OpenStudy (jhannybean):
Is that korean?
OpenStudy (anonymous):
i dont think im supose to find the area just the length=? meters and sorry
OpenStudy (anonymous):
and yes
OpenStudy (jhannybean):
To make things easier, factor out \(x^2-6x-7\)
OpenStudy (anonymous):
swibsali
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OpenStudy (jhannybean):
Well, in your answer you will have an expression for the length, as in length = equation.
OpenStudy (anonymous):
in meters like this|dw:1440162954761:dw|
OpenStudy (anonymous):
u jeongmal ilh-eoss-eoyo
OpenStudy (jhannybean):
yes, so if \(l= \dfrac{A}{w}\) and \(A = x^2-6x-7\), how can we factor \(x^2-6x-7\) ?
OpenStudy (anonymous):
(x−7)(x+1)?
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