When you multiply a number by its reciprocal, the result is always 1. Therefore, x times x to the power of -1 is equal to 1. This can be understood by applying the rule of exponents that states x^(-1) is the same as 1/x. So, x * (1/x) = 1.
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x * x-1 = 1
because x-1 is just another way of saying 1/x, and:
x * 1/x = x/x = 1
370 = 1 ======any number to the power of zero will equal 1
Any number to the power of zero equals 1 50 = 1 120 = 1 13120 = 1 ...
-1/6 * 3x = -3x/6 = -x/2
It is a polynomial expression in x. What about it?
For n not equal to -1, it is 1/(n+1)*xn+1 while for n = -1, it is ln(|x|), the logarithm to base e.