If $[x]$ is defined as $x^2 – 1$ for all integers x, then $[x + 1] - [x] =$

Correct answer marked below

0

x

x+2

2x

2x+1

Correct

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What this question tests

Your ability to evaluate and compose functions, including unusual defined operations.

Applying function operations in the wrong order or ignoring domain restrictions.

If [x][x][x] is defined as x2–1x^2 – 1x2–1 for all integers x, then [x+1]−[x]=[x + 1] - [x] =[x+1]−[x]=