The algebraic expression for x times x is x2 ( x squared).
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Just multiply 9 by itself: 9 x 9 = ?
x^2 = x*x, so multiply X by itself. For example, 4^2 would be 4*4=16.
Multiply x by itself five times. x times x times x times x times x equals x5
When you multiply two variables with different exponents, the exponents are added. For example, if you multiply x^2 by x^3, the result is x^(2+3) = x^5. Similarly, if you multiply x^3 by x^(-2), the result is x^(3+(-2)) = x^1 = x.