Question

.
f(x) = |x-1| + |x+2| -2 |x|​

Answer 1

$\huge{\underline{\red{\mathrm{AnSweR}}}}$

|x - 1| + |x + 2| - 2 |x|

x - 1 + x + 2 - 2x

2x - 2x + 1

0 + 1

1