Question

[Nguyễn Xuân Ngân]

2^x+2^x+3=288. tìm x

Answer 1

[Yên Thế Duy]

=>2^x.(1+2³)=288

=>2^x.9=288

=>2^x=288:9

=>2^x=32

=>x=5

Answer 2

[Ngọc Nguyễn Minh]

2^x+2^x+3=288

2^x.1+2^x.2³=288

2^x(1+2³)=288

2^x.9=288

2^x=288:9

2^x=32

2^x=2⁵

=> x=5

Vậy x=5