Which exercises/theory should we discuss?

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Which exercises/theory should we discuss?

What is the opposite number of -7?

What is the square of 4?

Calculate:

(−5)2

A

10

B

-10

C

25

D

-25

Calculate:

−62

A

12

B

-12

C

36

D

-36

Calculate the square of -8

A

8

B

16

C

64

D

-64