Question

Which numerical expression equals − 1?

A)
− 1(1− 1)

B)
− (− 1)(− 1)

C)
(− 1) + 1 − 1 (− 1)

D)
− (− 1) − (− 1)(− 1)

Answer 1

Answer:

d)-(-1)-(-1)(-1)

Step-by-step explanation:

first we solve bracket

- + - = +

+1+1-1

2-1

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Answer 2

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Option....D

==》-(-1)-(-1)(-1)

==》+1 +1 -1

==》2 -1

==》1

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