(4a-b²)·(-2b)=?2ab²·(-3ab)=?4x²y·(-xy²)³=?(1.3x10^5)(3.8x10³)=?

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(4a-b²)·(-2b)=?2ab²·(-3ab)=?4x²y·(-xy²)³=?(1.3x10^5)(3.8x10³)=?

(4a-b²)·(-2b)=?2ab²·(-3ab)=?4x²y·(-xy²)³=?(1.3x10^5)(3.8x10³)=?
(4a-b²)·(-2b)=?2ab²·(-3ab)=?
4x²y·(-xy²)³=?
(1.3x10^5)(3.8x10³)=?

(4a-b²)·(-2b)=?2ab²·(-3ab)=?4x²y·(-xy²)³=?(1.3x10^5)(3.8x10³)=?
(4a-b²)·(-2b)=2b³-8ab
2ab²·(-3ab)=-6a²b³
4x²y·(-xy²)³=4x²y·(-x³y^6)=-4x^5y^7
(1.3x10^5)(3.8x10³)=(3.8×1.3)×10^8=4.94×10^8

(4a-b^2)*(-2b)=-8ab+2b^3
2ab^2*(-3ab)=-6a^2b^3
4x^2y*(-xy^2)^3=4x^2y*(-x^3y^6)=-4x^5y^7
(1.3*10^5)*(3.8*10^3)=1.3*3.8*10^8=4.94*10^8