Question

Verify that minus x is equal to x for the following values of x 4 by 7

Answer 1

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▪︎ -x = x for x⁴/7.

${\large{\blue{\bold{\underline{So\:Here,}}}}}$

=》 x⁴/7 = x × x × x × x/7

= x² × x²/7

And

=》 (-x)⁴/7 = (-x)×(-x)×(-x)×(-x)/7

=》 x² × x²/7.

{Since (-)×(-) = +}

${\large{\blue{\bold{\underline{Therefore,}}}}}$

We can clearly see that,

=》 x⁴/7 = x² × x²/7

=》 (-x)⁴/7 = x² × x²/7

=》 x⁴/7 = (-x)⁴/7

=》 x⁴ = (-x)⁴

=》 x = (-x)

Therefore -x = x for the given case.

HENCE VERIFIED

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