Question

Đề bài: Tìm x, biết:

a) 3 mũ x = 27

b) 4 mũ x = 64

Answer 1

a) 3^x =27

=> 3^x = 3³

^{=> x =3}

b) 4^x = 64

=> 4^x = 4³

^{=> x = 3}

Answer 2

a) \(3^x=27\Leftrightarrow3^x=3^3\Rightarrow x=3\) vậy \(x=3\)

b) \(4^x=64\Leftrightarrow4^x=4^3\Rightarrow x=3\) vậy \(x=3\)

Answer 3

\(a)3^x=27\Rightarrow x=3\)

\(b)4^x=64\Rightarrow x=3\)