Question

ДАЮ 50Б!!!!!!!!!!!!!!!СРОЧНО.

Answer 1

а) -2x^3-x^2+[

б) -12xy

в) 2a^3-3na-2n^3-na=2a^3-2n^3-4na

г) 12y^3+3y^2-2y^2+4y^2=12y^3+5y^2

4) -8b^4+16b^5

5) 2x^2+2x-8x+4x^2=6x^2-6x