simplify (1/8)^(-2/3)
Let's reduce: (18)-23
ⓘ The factor is moved to the numerator or the denominator by changing the sign of its exponent, for a nonzero base: (18)-23 = 1(18)23
1(18)23
ⓘ The power of a quotient is the quotient of the powers, (a/b)^n = a^n/b^n: (18)23 = 1823
11823
ⓘ An exponent m/n means taking the nth root and then the mth power; here, the root of order 3 of 8 is 2: 823 = 22
1122
ⓘ Powers are computed before multiplications, additions and subtractions. An integer power is a repeated product: 22 = 2×2 = 4
114
ⓘ Dividing is multiplying by the reciprocal: 114 = 4
▶Simplified form:   4