Question

2(x^2-4)=(x^2-16)+(x^2-9)+x

Answer 1

2(x^2-4)=(x^2-16)+(x^2-9)+x

2х^2-8=x^2-16+x^2-9+x

2x^2-x^2-x^2-x=8-16-9

-x=-17

x=17

Answer 2

2х^2-8=х^2-16+x^2-9+x

2x^2-x^2-x^2-x=8-16-9

 

 x=17