Question

considerando a equação 3-2×=1-×+3. indique a incógnita.

Answer 1

$3-2^x=1^{-x}+3\\\\-2^x=1^{-x}+3-3\\\\-2^x=1^{-x}\\\\Lembrando\;que\;qualquer\;numero\;elevado\;a\;0\;vale\;1:\\\\-2^{x}=\left(2^0\right)^{-x}\\\\-2^{x}=(2)^{0\,.\,-x}\\\\-2^x=(2)^0\\\\-x=0\\\\x=0$