Question

Me Ajudeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeem

Answer 1

a) $(-7x).( x^{2}-2xy) \\ -7x^3+14x^2y$

b) $(5x^4-15x^3y+9y^2-1).(-5xy) \\ -25x^5y+75x^4y^2-45xy3+5xy$

c) $(-48a^3).( \frac{a^2}{12} - \frac{a}{8} - \frac{19}{6}) \\ \frac{-48a^5}{12}+\frac{-48a^4}{8}+\frac{912a^3}{6} \\ -4a^5+6a^4+152a^3$

d) $(-\frac{36}{13} xy^2).( -\frac{39}{6}x^3+\frac{52}{15}xy^2-\frac{13}{36})\\ \\ \frac{1404}{78}x^4y^2- (\frac{1872}{195}x^2y^4):3+\frac{468}{468} \\ \\ 18x^4y^2- \frac{634}{65} x^2y^4+1$