Question

X^1 - x^-1 + x^0 for x =2

Answer 1

For x = 2 the value of the expression is 2.5

Explanation:

the given expression is
`x^(1) - x^(-1) + x^(0) = x -((1)/(x)) + 1`

Simplifying further
`(x^(2)-1 )/(x) + 1`

Now if we put the value of x = 2 in the simplified form of the expression we get

`(x^(2) - 1)/(2) + 1` =
`(4-1)/(2) + 1 = (3)/(2) + 1 = 1.5 + 1 = 2.5`

Answer 2

2 1/2

Explanation:

X^1 - x^-1 + x^0

Let x=2

2^1 - 2^(-1) +2^0

We know that negative exponents put the number in the denominator and anything to the zero power is 1

2 - 1/2 +1

Rewriting

2+1-1/2

3-1/2

2 1/2