Question

2 cu puterea x+3=128
Repede,va rog

Answer 1

2 ( la x ) · 2³ =128 
2 ( la x ) =128  :2³ =128 : 8 = 16 = 2⁴ 
daca  x = 4
Sper ca te-am ajutat!

Answer 2

2la puterea x+3=128      2la puterea x*2la puterea 3=128     2la put x*8=128     2la put x=128/8    2 la put x=16     2la put x=2 la put 4      deci x=4