Question

2^x+2^x+1+2^x+2+2^x+3=480

mong các bạn giúp đỡ mk . xin camon trả lời rõ hộ mk nha nha

Answer 1

\(2^x+2^{x+1}+2^{x+2}+2^{x+3}=480\)

<=>\(2^x+2^x.2+2^x.4+2^x.8=480\)

<=>\(2^x\left(1+2+4+8\right)=480\)

<=>\(2^x.15=480\)

<=>\(2^x=32\)

=>\(x=5\)