Question

\(7^{2x}+7^{2x}.7^3=344\)

Answer 1

7^2x + 7^2x . 7³ = 344

=> 7^2x.(1 + 343) = 344

=> 7^2x . 344 = 344

=> 7^2x = 344 : 344

=> 7^2x = 1

=> 7^2x = 7⁰

=> 2x = 0

=> x=  0

Answer 2

7^2x+7^2x.7³=344

=>7^2x(1+7³)=344

=>7^2x=1

=>7^2x=7⁰

=>2x=0

=>x=0

Vậy x=0.

Answer 3

7^2x + 7^2x . 7³ = 344

=> 7^2x. (1 + 7³) = 344

=> 7^2x.344 = 344

=> 7^2x = 1

=> 7^2x = 7⁰

=> 2x = 0

=> x = 0

Vậy x = 0

Answer 4

7^2x + 7^2x . 7³ = 344

=> 7^2x .1+ 7^2x . 7³ = 344

=> 7^2x.(1+7³) = 344

=> 7^2x.(1+ 343) = 344

=> 7^{2x .} 344 = 344

=> 7^2x = 344 : 344

=> 7^2x = 1

=> 7^2x = 7⁰

=> 2x = 0

=> x = 0 : 2

=> x = 0

Vậy x = 0

Answer 5

Bài làm

7^2x + 7^2x . 7³ = 344

7^2x ( 1 + 343 ) = 344

7^2x . 344 = 344

7^2x = 1

Để 7^2x = 1 <=> x = 0

=> 7^2.0 = 7⁰ = 1

Vậy x = 0

# Học tốt #

Answer 6

\(7^{2x}+7^{2x}.7^3=344\)

\(7^{2x}.\left(1+343\right)=344\)

\(7^{2x}=1\)

\(7^{2x}=0\)

\(2x=0\)

\(\Rightarrow x=0\)