Answer 2.1:1
From Förberedande kurs i matematik 1
| a) | \displaystyle 3x^2-3x | b) | \displaystyle xy+x^2y-x^3y | c) | \displaystyle -4x^2+x^2y^2 |
| d) | \displaystyle x^3y-x^2y+x^3y^2 | e) | \displaystyle x^2-14x+49 | f) | \displaystyle 16y^2+40y+25 |
| g) | \displaystyle 9x^6-6x^3y^2+y^4 | h) | \displaystyle 9x^{10}+30x^8+25x^6 |
