prohieu244 prohieu244
  • 18-08-2021
  • Mathematics
contestada

x²+x=0
x³-25x=0
x²=4x
4x²-4x=1

Respuesta :

ansu69622
ansu69622 ansu69622
  • 18-08-2021

Answer:

x²+ x = 0

x ( x +1 ) = 0

x = -1

x³-25x=0

x ( x² - 25 ) = 0

x² = 25

x = 5

x²=4x

x² - 4x = 0

x ( x- 4 ) = 0

x = 4

4x²-4x=1

4x²-4x - 1 = 0

4 x² - 2x - 2x - 1 = 0

2x ( 2x - 1 ) - 1 ( 2x- 1 ) = 0

2x- 1 ) ² = 0

2x = 1

x = 1/ 2

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