\(2,5^{x+1}=5^2\)
\(x+1=2\)
\(x=2-1\)
\(x=1\)
\(3,6^{x+4}=6^{10}\)
\(x+4=10\)
\(x=10-4\)
\(x=6\)
\(4,2^{2x+1}=2^7\)
\(2x+1=7\)
\(2x=7-1\)
\(2x=6\)
\(x=6:2\)
\(x=3\)
\(5,5^{x-1}=5^2\)
\(x-1=2\)
\(x=2+1\)
\(x=3\)
\(6,2^{2x-3}=2^9\)
\(2x-3=9\)
\(2x=9+3\)
\(2x=12\)
\(x=12:2\)
\(x=6\)
\(7,5^{2x-7}=5^{11}\)
\(2x-7=11\)
\(2x=11+7\)
\(2x=18\)
\(x=18:2\)
\(x=9\)
\(8,5^{2x-4}=5^{10}\)
\(2x-4=10\)
\(2x=10+4\)
\(2x=14\)
\(x=14:2\)
\(x=7\)
\(9,7^{2x-3}=7^7\)
\(2x-3=7\)
\(2x=7+3\)
\(2x=10\)
\(x=10:2\)
\(x=5\)
\(10,11^{2x-1}=11^{11}\)
\(2x-1=11\)
\(2x=11+1\)
\(2x=12\)
\(x=12:2\)
\(x=6\)
Đúng 6
Bình luận (15)