Question

How do you find the values of x given `[(x,4,1)][(2,1,0), (1, 0, 2), (0, 2, 4)][(x), (-7), (5/4)]=0`?

Answer 1

`x = 1/2" "` or `" "x = 1`

Explanation:

`(0) = ((x, 4, 1))((2,1,0),(1,0,2),(0,2,4))((x),(-7),(5/4))`

`color(white)((0)) = ((2x+4, x+2, 12))((x),(-7),(5/4))`

`color(white)((0)) = (2x^2+4x-7x-14+15)`

`color(white)((0)) = (2x^2-3x+1)`

`color(white)((0)) = ((2x-1)(x-1))`

So:

`x = 1/2" "` or `" "x = 1`