A number that produces another number its square when multiplied by itself?

A number that produces its square when multiplied by itself is any real number ( x ) since the operation ( x \times x ) equals ( x^2 ). For example, if ( x = 3 ), then ( 3 \times 3 = 9 ), which is indeed the square of 3. This relationship holds true for all real numbers, including zero and negative numbers.