Bài 5:
a: \(\Leftrightarrow2^x=32\)
hay x=5
c: \(\Leftrightarrow2x+1=5\)
=>2x=4
hay x=2
b: =>x(x14-1)=0
=>x(x2-1)=0
=>x(x-1)(x+1)=0
hay \(x\in\left\{0;1;-1\right\}\)
d: \(\Leftrightarrow\left(x-5\right)^4\cdot\left(x-4\right)\left(x-6\right)=0\)
hay \(x\in\left\{5;4;6\right\}\)