1) M = 2a^2b^5 - 2m - 7 + 8a^b^3 + 12) M = 2a^2 + 2b^2 - (a^2 - ab + b^2)3) M = 6x^2 + 9xy - y^2 - (5x^2 - 2xy)4) M = 12a^2 - 7ab - (3a^2 - ab + b^2)
1) M = 2a^2b^5 - 2m - 7 + 8a^b^3 + 1
2) M = 2a^2 + 2b^2 - (a^2 - ab + b^2)
3) M = 6x^2 + 9xy - y^2 - (5x^2 - 2xy)
4) M = 12a^2 - 7ab - (3a^2 - ab + b^2)