Question

12.) 5x-11y-9+20x-1-y=
13.) 〖 y〗^3 〖+4y〗^2-10+2y^3-y^2+7=
14.) 〖 a〗^2-3ab+b^2 〖+2a〗^2+3ab-〖2b〗^2=
15.) 〖3x〗^2-2x+5〖-x〗^2+4x-8=

Answer 1

*buscando la respuesta* :v