Here is the matrix. The n's and y's in regular face are taken directly from the given statements. The y's in bold face were placed by logical thinking of what spaces were left and according to the statements.
For this case we have the following equation: Rewriting we have: We raise both members of the equation to the square: Rewriting we have: It's a extraneous solution because equality is not met by substituting x = 10 in the original equation: Answer: The solution is: It's a extraneous solution