Question

(3b)^2= 2.—（ab）^2 3.（-4a^2）^3 4.（y^2z^3)^3 5.(xy^3n)^2+(xy^6

Answer 1

(3b)^2 = 9b^2

-(ab)^2 = -a^2b^2

(-4a^2)^3 = -64a^6

(y^2z^3)^3 = y^6z^9

(xy^(3n))^2+(xy^6)^n = x^2y^(6n) + x^ny^(6n)

(-3x^3)^2-[(2x)^2]^3 = 9x^6 - 8x^6 = x^6