Question

Equação Exponencial:

Answer 1

$3\cdot(3^{2})^{x} -10\cdot(3^{x}) +3 = 0$

3ˣ = u

$3u^{2}-10u +3 = 0$

$\boxed{\mathsf{\Delta=b^2-4ac}}$

100 -4 * 9

64 → 8²

$\boxed{\mathsf{u=\frac{-b\pm\sqrt{\Delta}}{2a}}}}$

10 ±  8/6

{3 , 1/3}

3ˣ = 3

x = 1

3ˣ = 3⁻¹

x = -1

x = ±  1