zgt0170
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?

Respuesta :

rubyredcupcakes rubyredcupcakes
  • 23-02-2018
w= (5x - 8) this is your answer
Answer Link
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)
Answer Link

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