annmariecraig annmariecraig

17-01-2019
Mathematics

contestada

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

Respuesta :

jennychrin95 jennychrin95

17-01-2019

Answer:

x = -12

Step-by-step explanation:

2x^2 + 8 = x^2 - 16

2x + 2x + 8 = x + x - 16

4x + 8 = 2x - 16

-2x -2x

2x + 8 = -16

-8 -8

2x = -24

---- ------

2 2

x = -12

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