Question

pls answer it plz plz plz​

Answer 1

Answer:

$3( {2}^{x} + 1) - {2}^{x + 2} + 5 = 0$

$= > 3 \times {2}^{x} + 3 - {2}^{x} {2}^{2} + 5 = 0$

$let \: {2}^{x} = y$

$= > 3y - 4y + 8 = 0$

$= > - y + 8 = 0$

$= > - y = - 8$

$= > y = 8$

$= > {2}^{x} = 8$

$= > {2}^{x} = {2}^{3}$

$= > x = 3$

Answer 2

Answer:

bhai sorry mujhe nhi pta