Question

Resolva as equações:
2^x + ³ = (1/2)^5

9^x - ² = 729

0,25^x = 1/4

Answer 1

1

( 2) ˣ ⁺³  = ( 1/2)⁵
( 2 ) ˣ⁺³ = ( 2 )⁻⁵
x + 3 = -5
x = -5 - 3
x = -8 ****
2
( 9 )ˣ⁻² = 729  =  ( 3)⁶
( 3²)ˣ⁻² = ( 3)⁶
( 3)²ˣ⁻⁴ = ( 3 )⁶
2x - 4 = 6
2x = 6 + 4
2x = 10
x = 5 ***

3
(0,25)ˣ =( 1/4 )
( 0,25)ˣ = ( 0,25)¹
x = 1 ****