Question

Which of the following expressions is equivalent to (-3x5y) (-4x9y2)

Answer 1

12x^227xy^2 - 20xy4y^3

Explanation:

(-3x5y) (-4x9y^2)

first : -3x (-4x9y^2) = 12x^227xy^2

second: 5y(-4x9y^2) = -20xy45y^3

then we add them (12x^227xy^2) + ( -20xy45y^3)

= 12x^227xy^2 - 20xy45y^3