Question

verify that -(-x) =x for​

Answer 1

Explanation:

we know that (-)×(-)=(+)

so,-(-x)=x

Answer 2

Explanation:

according according to the sign rules

negative X negative is always positive

in the equation

-(-x)=x

x is multiplied by -1

so we can write the equation as

-(-1x)=x

now square the equation on both sides

therefore the square of minus sign will be plus sign

(-1x)^2=x^2

now the square of -1 will be 1

1x^2=x^2

thus now take the square root on both sides

square root of 1 is 1 square root of x square is x

1x=x

now take the one on left hand side and divide it by X on right hand side

x=x/1

anything divided by 1 is the number itself

thus

x=x

hence proven-(-x)=x