zgt0170 zgt0170

23-02-2018
Mathematics

contestada

the area of a rectangle is 20x^2-27x-8.the length is 4x+1. What is the width?

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rubyredcupcakes rubyredcupcakes

23-02-2018

w= (5x - 8) this is your answer

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sanajavaid sanajavaid

23-02-2018

⇒w=(5x−8)
Explanation:
Let width be w
Then w(4x+1)=20x2−27x−8
So
(?x+?)(4x+1)=20x2−27x−8
Note that
5×4=20 and (−8)×(+1)=−8
⇒w(4x+1)
=(5x-8)(4x+1)=20x2+5x−32x−8
⇒w(5x−8)

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