Question

if (-3)^x-1 = -243, then find the value of (-7)^x-6. if the answer is 1 then why.

Answer 1

${\huge{\boxed{\mathfrak{\blue{answer}}}}}$

$- {3}^{x - 1} = 243$

${3}^{x - 1} = ( { - 3}^{5} )$

$x - 1 = 5 \\ x = 5 + 1 \\ = 6 \\ now \\ ( { - 7}^{6 - 6}) \\ answer \\1$

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