А) xy- 9 x - (x - 2xy) = б)12 x2y - 6 xy - 24x y2= в)b-c-a(c-b)= г)16 - 9 x2+ 4 x2=

Question

А) xy- 9 x - (x - 2xy) = б)12 x2y - 6 xy - 24x y2= в)b-c-a(c-b)= г)16 - 9 x2+ 4 x2=

Answer 1

а) xy- 9 x - (x - 2xy) =xy-9x-x+2xy=3xy-10x

б)12 x2y - 6 xy - 24x y2=6xy*( 2x-1-4y)

в)b-c-a(c-b)= b-c-ac+ab 

 г)16 - 9 x2+ 4 x2=16-5x^2