m3rk098 m3rk098
  • 02-05-2018
  • Mathematics
contestada

hey can you please help me posted picture of question

hey can you please help me posted picture of question class=

Respuesta :

levy96464
levy96464 levy96464
  • 02-05-2018
E hope my answer was right
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Louli
Louli Louli
  • 02-05-2018
Answer:
The solutions are 3 and -3

Explanation:
To get the solution, we will need to isolate the x on one side of the equation as follows:
10x² - 56 = 88 - 6x²
10x² - 56 + 56 = 88 - 6x² + 56
10x² = 144 - 6x²
10x² + 6x² = 144 - 6x² + 6x²
16x² = 144
x² = 144/16
x² = 9
x = ±√9
either x = +√9 = 3
or x = -√9 = -3

Hope this helps :)
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