salina9132p9xfjh salina9132p9xfjh
  • 07-06-2018
  • Mathematics
contestada

what is the the only solution of 2x^2+8x=x^2-16

Respuesta :

1233481
1233481 1233481
  • 07-06-2018
I got -4 as the solution
Answer Link
mkryukova19 mkryukova19
  • 07-06-2018
2x² + 8x = x² - 16
2x² - x²+8x + 16 = 0
x²+8x+16 = 0
x² + 2*4x + 4² = 0
(x+4)² = 0
x+4 = 0
x= - 4
Answer Link

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