kenzie7860 kenzie7860
  • 18-09-2020
  • Mathematics
contestada

2x^2-50=x^2-1
solve by factoring
step by step please

Respuesta :

samkr14
samkr14 samkr14
  • 18-09-2020

Answer:

x = -7, 7

Step-by-step explanation:

  • 2x²-50 = x² -1
  • 2x²-x²-50+1 = 0
  • x²-49 = 0
  • (x+7)(x-7)
  • x = -7, 7
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