Question

2^x+1+2^x-1=80 qual a resposta???

Answer 1

2^x+1+2^x-1=80

2^x . 2¹ + 2^x .2-¹=80

2^x .(2¹+2-¹)=80

2^x.(2+1/2)=80

2^x. (4+1/2)=80

2^ x. (5/2)= 80

2^x .5= 80×2

2^x= 160/5

2^x=32

2^x= 2^5

x=5

S={5}