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

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OrethaWilkison OrethaWilkison · Answer 1 · 2019-02-11T06:47:48+01:00

Answer:

Given the expression:

1.

[tex]-4^2[/tex]

we know:

[tex]4^2 = 4 \times 4 = 16[/tex]

then;

[tex]-4^2 = -16[/tex]

Therefore, the value of expression [tex]-4^2[/tex] is -16 i.e negative.

2.

[tex](-4)^2[/tex]

we know:

[tex]4^2 = 4 \times 4 = 16[/tex]

[tex](-1)^2 = 1[/tex]

then;

[tex](-4)^2 = (-1)^2 \cdot (4)^2= 16[/tex]

Therefore, the expression [tex](-4)^2[/tex] is 16 i.e Positive.

3.

[tex]4^2[/tex]

we know:

[tex]4^2 = 4 \times 4 = 16[/tex]

then;

[tex]4^2 = 16[/tex]

Therefore, the expression [tex]4^2[/tex] is 16 i.e Positive.