Question

55^2x÷11^2x=625

Answer 1

\(55^{2x}\div11^{2x}=625\)

\(\left(55:11\right)^{2x}=625\)

\(5^{2x}=5^4\Rightarrow2x=4\Rightarrow x=2\)

Answer 2

Ta có \(55^{2x}\div11^{2x}=625\)

\(\Rightarrow\left(55\div11\right)^{2x}=625\)

\(\Rightarrow5^{2x}=5^4\)

\(\Rightarrow2x=4\)

\(\Rightarrow x=2\)

Answer 3

\(55^{2x}\div11^{2x}=625\)

\(\Leftrightarrow\left(55\div11\right)^{2x}=625\)

\(\Leftrightarrow5^{2x}=5^4\)

\(\Leftrightarrow2x=4\)

\(\Rightarrow x=2\)