\(a, 9.5^x=6.5^6+3.5^6\)
\(\Leftrightarrow 9.5^x=5^6.(6+3)\)
\(\Leftrightarrow 9.5^x=5^6.9\)
\(\Rightarrow x=6\)
\(b, (-2)^x=32^5.64^6\)
\(\Leftrightarrow (-2)^x=(2^5)^5.(2^6)^6\)
\(\Leftrightarrow (-2)^x=2^{25}.2^{36}\)
\(\Leftrightarrow (-2)^x=2^{61}\)
\(\Rightarrow
\) Không có giá trị x nào thỏa mãn