Question

Помогите срочно!!! Даю 25 баллов!!!

Answer 1

$(4y {x}^{2} )(3x {y}^{2} + 5xy) = 12 {x}^{3} {y}^{3} + 20 {x}^{3} {y}^{2}$

Answer 2

$(4yx^{2} )(A + 5xy) = 12x^{3} y^{3}+ 20x^{3}y^{2}\\4yx^{2}A+ 20x^{3}y^{2} = 12x^{3} y^{3}  + 20x^{3}y^{2}  \\4yx^{2}A= 12x^{3} y^{3}  + 20x^{3}y^{2} - 20x^{3}y^{2} \\4yx^{2}A= 12x^{3} y^{3} \\A= 3x y^{2}$