collinhambleton collinhambleton
  • 25-02-2020
  • Mathematics
contestada

I need help if you dont mind

I need help if you dont mind class=

Respuesta :

jimrgrant1 jimrgrant1
  • 25-02-2020

Answer:

x² + 23x + 49

Step-by-step explanation:

The area of the shaded region = area of outer rectangle - area of white square.

A = (x + 10)(2x + 5) - (x + 1)(x + 1) ← expand factors using FOIL

   = 2x² + 25x + 50 - (x² + 2x + 1)

   = 2x² + 25x + 50 - x² - 2x - 1 ← collect like terms

   = x² + 23x + 49

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