1.(3b)^2= 2.—(ab)^2 3.(-4a^2)^3 4.(y^2z^3)^35.(xy^3n)^2+(xy^6)^n 6.(-3x^3)^2-[(2x)^2]^3

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1.(3b)^2= 2.—(ab)^2 3.(-4a^2)^3 4.(y^2z^3)^35.(xy^3n)^2+(xy^6)^n 6.(-3x^3)^2-[(2x)^2]^3
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1.(3b)^2= 2.—(ab)^2 3.(-4a^2)^3 4.(y^2z^3)^35.(xy^3n)^2+(xy^6)^n 6.(-3x^3)^2-[(2x)^2]^3
1.(3b)^2= 2.—(ab)^2 3.(-4a^2)^3 4.(y^2z^3)^3
5.(xy^3n)^2+(xy^6)^n 6.(-3x^3)^2-[(2x)^2]^3

1.(3b)^2= 2.—(ab)^2 3.(-4a^2)^3 4.(y^2z^3)^35.(xy^3n)^2+(xy^6)^n 6.(-3x^3)^2-[(2x)^2]^3
1、7÷2=3.5(米) 3.5+1.5=5(米) 5×5×3.14=78.5(㎡) 3.5×3.5×3.14=38.465(㎡) 78.5-38.465=40.035(㎡) 2、 50.