hansku25
hansku25 hansku25
  • 07-10-2021
  • Mathematics
contestada

(2x + 1)2 − 4x(x − 1) = 7

Respuesta :

ghaithgh
ghaithgh ghaithgh
  • 07-10-2021

Answer:

[tex](2x + 1)^{2} - 4x(x - 1) = 7 \\ (2x + 1)(2x + 1) - 4 {x}^{2} + 4x = 7 \\ 4 {x}^{2} + 4x + 1 - 4 {x}^{2} + 4x = 7 \\ 8x + 1 = 7 \\ 8x = 7 - 1 \\ 8x = 6 \\ \\ x = \frac{6}{8} \\ \\ x = \frac{3}{4} \\ \\ x = 0.75[/tex]

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