Question

(0,4x - 1,3)² = 5,29

Answer 1

(0,4x - 1,3 )² = 5,29 = (2,3)²

=> 0,4x - 1,3 = 2,3

=>  0,4x = 2,3 +1,3 = =3,6

=> x = \(\frac{3,6}{0,4}=9\)

Answer 2

\(\left(0,4x-1,3\right)^2=5,29\)

\(\left(0,4x-1,3\right)=\sqrt{5,29}\)

\(\left(0,4x-1,3\right)=2,3\)

\(0,4x=2,3+1,3\)

\(0,4x=3,6\)

\(x=3,6:0,4\)

\(x=9\)

Answer 3

bài này dễ mà bạn

Answer 4

\(\left(0,4x-1,3\right)^2=5,29\)

\(\left(0,4x-1,3\right)=\sqrt{5,29}\)

\(\left(0,4x-1,3\right)=2,3\)

\(0,4x=2,3+1,3\)

\(0,4x=3,6\)

\(x=3,6:0,4\)

\(x=9\)nha 

Nguyễn Huyền Phương