What is x^2 times x^2?

Answer 1

x^2 * x^2 = (x*x)*(x*x) = x*x*x*x = x^4

or,

x^2 * x^2 = x^(2+2) = x^4

or,

x^2 * x^2 = (x^2)^2 = x^(2*2) = x^4