Please help Adding/Subtracting Polynomials
1. (a^2 + ab – 3b^2) + (4a^2 – ab + b^2)
2. (7a^2–a+4)–(3a^2–4a–3)
3. (5e^2–e–7)–(-2e^2+3e+4)
Multiplying Polynomials
4. 4a(3x+5)
5. 6rs(2r^2+3rs)
6. 3x(5x^2–x+4)
7. (a+b)(2a–3b)
8. (z–2x)(z–2x)
9. (2y+3)(y^2+3y–6) 10.(e – f)(e^2 – 2ef + f^2)