Question

Номер б) 3^2x-3-8*3^x-2=3

Answer 1

$3 {}^{2x} times 3 {}^{ - 3} - 8 times 3 {}^{x} times 3 { }^{ - 2} = 3$
$(3x) {}^{2} times frac{1}{3 {}^{2} } - 8 times 3 {}^{x} times frac{1}{3 {}^{2} } = 3$
$(3x) {}^{2} times frac{1}{27} - frac{8}{9} times 3 {}^{x} = 3$
$t {}^{2} times frac{1}{27} - frac{8}{9} t = 3$
t=27
t=-3
$3 {}^{x} = 27 \ 3 {}^{x} = - 3$