Question

Tìm x        2^2 * 3 ( x + 5 ) - 6^2 = ( 2^3 + 2^2 ) * 2^2 

Answer 1

Ta có: \(2^2\cdot3\left(x+5\right)-6^2=\left(2^3+2^2\right)\cdot2^2\)

\(\Leftrightarrow12\left(x+5\right)-36=2^5+2^4=48\)

\(\Leftrightarrow x+5=7\)

hay x=2

Answer 2

Tìm x      ( 2^2 + 1 ) ( x + 14 ) = 5^2 * 4 + ( 2^5 + 3^2 + 7^2 ) : 2