Question

Evaluate each expression. Determine if the final simplified form of the expression is positive or negative -42 (-4)2 42

Answer 1

Given the expression:

1.

`-4^2`

we know:

`4^2 = 4 * 4 = 16`

then;

`-4^2 = -16`

Therefore, the value of expression
`-4^2` is -16 i.e negative.

2.

`(-4)^2`

we know:

`4^2 = 4 * 4 = 16`

`(-1)^2 = 1`

then;

`(-4)^2 = (-1)^2 \cdot (4)^2= 16`

Therefore, the expression
`(-4)^2` is 16 i.e Positive.

3.

`4^2`

we know:

`4^2 = 4 * 4 = 16`

then;

`4^2 = 16`

Therefore, the expression
`4^2` is 16 i.e Positive.