Question

Преобразуй в многочлен произведение 1) -2 m3n2(6m3-m2n4+10n2) = 2) 3/7 xy2(7x-1,4y+35) = 3) xy(8-x) = 4) 4x(3x3-x+1) =

Answer 1

-12m(6)n(2)+2m(5)n(6)-20m(3)n(4)
3x(2)y(2)-0,6xy(3)+15xy(2)
8xy-x(2)y
12x(4)-4x(2)+4x

Answer 2

1. -2m^3n^2(6m^3 - m^2n^4 + 10n^2) = -2 * 6m^6n^2 + 2m^5n^6 - 20m^3n^4 = -12m^6n^2 + 2m^5n^6 - 20m^3n^4

2. (3/7)xy^2(7x - 1.4y + 35) = (3/7) * 7x^2y^2 - (3/7) * 1.4xy^3 + (3/7) * 35xy^2 = 3xy^2 - 0.6xy^3 + 15xy^2 = 18xy^2 - 0.6xy^3

3. xy(8 - x) = 8xy - x^2y

4. 4x(3x^3 - x + 1) = 12x^4 - 4x^2 + 4x