Step 1 :Given the expression \(\log _{2}\left(10 x^{2}\right)\)
Step 2 :We can use the properties of logarithms to simplify each of the given expressions and compare them to the original expression.
Step 3 :\(\log _{2}\left(2 x^{2}\right)+\log _{2}(5)\) simplifies to \(\log _{2}\left(10 x^{2}\right)\), which is equivalent to the original expression.
Step 4 :\(\log _{2}\left(x^{2}\right)+10\) does not simplify to \(\log _{2}\left(10 x^{2}\right)\), so it is not equivalent to the original expression.
Step 5 :\(\log _{2}(2 x)+\log _{2}(5 x)\) does not simplify to \(\log _{2}\left(10 x^{2}\right)\), so it is not equivalent to the original expression.
Step 6 :\(\log _{2}(2)+\log _{2}\left(5 x^{2}\right)\) simplifies to \(\log _{2}\left(10 x^{2}\right)\), which is equivalent to the original expression.
Step 7 :\(\log _{2}(10)+\log _{2}\left(x^{2}\right)\) simplifies to \(\log _{2}\left(10 x^{2}\right)\), which is equivalent to the original expression.
Step 8 :Thus, the expressions \(\log _{2}\left(x^{2}\right)+10\) and \(\log _{2}(2 x)+\log _{2}(5 x)\) are not equivalent to the original expression \(\log _{2}\left(10 x^{2}\right)\).
Step 9 :However, the question asks for the one that is not equivalent, so the final answer is \(\boxed{\log _{2}\left(x^{2}\right)+10}\) or \(\boxed{\log _{2}(2 x)+\log _{2}(5 x)}\).