Question

dau coroana,trebuie aflat ce numar e x-ul punctul 18

Answer 1

a)2^2x^2=2^8
2^4x=2^8
4x=8
x=8/4
x=2
c)5^2x+6=5^4x+2
2x+6=4x+2
4x-2x=6-2
2x=4
x=4/2
x=2
e)3^5x=3^15
5x=15
x=15/5
x=3
g)x:2^5=4
x=4*2^5
x=4*32
x=128