例1(-2)3×33
=(-2)×(-2)×(-2)×3×3×3
=[(-2)×3]×[(-2)×3]×[(-2)×3]
=[(-2)×3]3
=(-6)3
=-216.
例2:86×0.1256
=8×8×8×8×8×8×0.125×0.125×0.125×0.125×0.125×0.125
=(8×0.125)×(8×0.125)×(8×0.125)×(8×0.125)×(8×0.125)×(8×0.125)
=(8×0.125)6
=1.
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