9. Any negative number squared is positive.
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-3 to the 2nd power is -3 x -3 = +9 ( negative x negative = positive)
It is: 3-1*3-2 = 1/27
a, a^3*a^-2 is a^3+-2 which equals just a
0.000244140625
5 over 8 to the negative 2nd power equals 2.56