Question

Bài 1:      a, 2^x = 16     b, x⁵⁰ = x

Bài 2:      a, x³ = -27    b, (x - 2)²  = 16

Answer 1

a)x=4

b)x=1

2)a)x=3

b)x=6

Answer 2

1)

\(a)2^x=2^4\)

\(\Leftrightarrow\)\(x=4\)

\(b)\)\(x^{50}=x\)

\(\Leftrightarrow\)\(x=0\)

2)

\(a)x^3=-3^3 \)

\(\Leftrightarrow\)\(x=-3\)

\(b)(x-2)^2=4^2\)

\(\Leftrightarrow\)\(x-2=4\)

\(\Leftrightarrow\)\(x=6\)

Answer 3

a)x=4

b)x=1

2)a)x=3

b)x=6

Answer 4

Bài 1: 

a: Ta có: \(2^x=16\)

nên x=4

b: Ta có: \(x^{50}=x\)

\(\Leftrightarrow x\left(x^{49}-1\right)=0\)

\(\Leftrightarrow\left[{}\begin{matrix}x=0\\x=1\end{matrix}\right.\)