1.[4a^2b^2(3b^2-5ab)-a^2(-2b)^3]÷8a^2b^3 2.(5x10^5)x(-6x10^-2)÷(-1/2x10^-2)

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1.[4a^2b^2(3b^2-5ab)-a^2(-2b)^3]÷8a^2b^3 2.(5x10^5)x(-6x10^-2)÷(-1/2x10^-2)

1.[4a^2b^2(3b^2-5ab)-a^2(-2b)^3]÷8a^2b^3 2.(5x10^5)x(-6x10^-2)÷(-1/2x10^-2)
1.[4a^2b^2(3b^2-5ab)-a^2(-2b)^3]÷8a^2b^3 2.(5x10^5)x(-6x10^-2)÷(-1/2x10^-2)

1.[4a^2b^2(3b^2-5ab)-a^2(-2b)^3]÷8a^2b^3 2.(5x10^5)x(-6x10^-2)÷(-1/2x10^-2)
1.[4a²b²(3b²-5ab)-a²(-2b)³]÷8a²b³
=[12a²b^4-20a³b³-a²*(-8b³)]÷8a²b³
=[12a²b^4-20a³b³+8a²b³)]÷8a²b³
=3/2 b-5/2 a+1
2.(5x10^5)x(-6x10^-2)÷(-1/2x10^-2)
=(-30×10³)÷(-1/2x10^-2)
=60×10^5
=6×10^6

1.[4a²b²(3b²-5ab)-a²(-2b)³]÷8a²b³=1.5b-2.5a+1
2.(5x10^5)x(-6x10^-2)÷(-1/2x10^-2)=-3×10^4÷(-5×10^-3)=6×10^7