Question

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(-1)× (-1) =
(-1)× (-1)× (-1) =
(-1)*(-1) *(-1) * (-1)=
(-1)* (-1) *(-1)* (-1) * (-1) =​

Answer 1

Answer:

(-1)×(-1)=1

(1)×(-1)×(-1)=-1

(-1)*(-1)*(-1)*(-1)=1

(-1)*(-1)*(-1)*(-1)*(-1)= -1

Answer 2

Answer:

i) 1

ii) (-1)

iii) 1

iv) (-1)

Step-by-step explanation:

The answer of this question depends on the principle that when we multiply nos. with same signs the ans will be positive, and when we multiply nos. with opposite signs the ans will be negative.

i) (-1)*(-1)

= 1                               ..............same signs

ii) (-1)*(-1)*(-1)

= 1 * (-1)                        ...............solving first 2 nos

= (-1)

iii) (-1)*(-1) *(-1) * (-1)

[ (-1)*(-1) ]  [ (-1) * (-1) ]

=  1 * 1                          

= 1

iv) (-1)* (-1) *(-1)* (-1) * (-1)

= [(-1)* (-1)]   [(-1)* (-1)]   (-1)

= 1 * 1 *(-1)

= (-1)

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