C-04-Q090mediumsingle_mcqSolve 22x+1=1282^{2x+1} = 12822x+1=128:ax=3x = 3x=3bx=7x = 7x=7cx=72x = \dfrac{7}{2}x=27dx=62x = \dfrac{6}{2}x=26ব্যাখ্যাSince 128=27128=2^7128=27, we have 2x+1=72x+1=72x+1=7, giving x=3x=3x=3.