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Alinara [238K]
3 years ago
13

How are the following three expressions different from each other, if needed they are? Do not just state the value of each but e

xplain what may be same or different.
That what my teacher said I’m confused plz help
Thank u so much to the people who helped me answer it.

Mathematics
1 answer:
Advocard [28]3 years ago
3 0

Answer:

2 and 3 are same since in both the cases we need to square 2 only not the negative 1 in it

1 is not same to 2 and 3 since in 1 we need to square 2 and negative 1 in it also.

Step-by-step explanation:

We are given the three expressions different from each other

We are supposed to find  what may be same or different.

1) (-2)^2

\Rightarrow (-1)^2 \times (2)^2\\\Rightarrow -1 \times -1 \times 2 \times 2 \\\Rightarrow 4

2)-2^2

\Rightarrow -1 \times 2^2\\\Rightarrow -1 \times 2 \times 2 \\\Rightarrow -4

3)-(2)^2

\Rightarrow -1 \times (2)^2\\\Rightarrow -1 \times 2 \times 2 \\\Rightarrow -4

Now 2 and 3 are same since in both the cases we need to square 2 only not the negative 1 in it

1 is not same to 2 and 3 since in 1 we need to square 2 and negative 1 in it also.

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