laithaolinh25102008 laithaolinh25102008
  • 26-09-2021
  • Mathematics
contestada

(2x+3)^2-(2x+1)(2x-1)=22

Respuesta :

jimrgrant1 jimrgrant1
  • 26-09-2021

Answer:

x = 1

Step-by-step explanation:

(2x + 3)² - (2x + 1)(2x - 1) = 22 ← expand factors using FOIL

4x² + 12x + 9 - (4x² - 1) = 22

4x² + 12x + 9 - 4x² + 1 = 22

12x + 10 = 22 ( subtract 10 from both sides )

12x = 12 ( divide both sides by 12 )

x = 1

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