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B. 27
C. 16
D. 16
E. -3
F. 4
G. x²y²
H. a³
b. (3xy)^3 =27 x^3 y^3
c. (-2ab)^4 = 16 a^4 b^4
d. (4a²b²)² = 16 a^(2+2) b^(2+2) = 16 a^4 b^4
E.-3 (x²y)³ = -3 x^(2+3) y^3 = -3 x^5 y^3
F.- (2pq)⁴ = -16p^4 q^4
G. 1/2 (2xy)² = x^2 y^2
H. A(ab²)³ = Aa^3 b^5