Solve for x, given the equation Square root of x plus 9 - 4 = 1.

x = 16, solution is not extraneous

x = 16, solution is extraneous

x = 34, solution is not extraneous

x = 34, solution is extraneous

The given condition may be mathematically expressed as,

sqrt (x) + 9 - 4 = 1

Group all the constants to the same side of the equation,

sqrt (x) = - 4

Squaring both sides give an answer of x = 16.

The answer for the question above is x = 16 is not an extraneous root because if we substitute this value to the x of the equation, the equation becomes true.