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8 * (-1/2)^3 + 4* (1/2)^2 =
=8 *(-1/8) + 4* 1/4 =
=-1 + 1=
=0
2)
(-3/2)^2 -4^(-1) *3^2=
=9/4 -1/4 *9 =
=8/4 *9 =
=2 *9=
=18