Solve the following problems by adding, subtracting or multiplying the polynomials: 1) (10a^2 + 6ab + 10) + (32 + 9a – 3ab)
2) (30x^2y^2z^2 – 10x^2y^2 – 3x^2) - (-5x^2y^2z^2 + 10y^2z^2 – 3x^2)
3) (a^2 + b) x (a + ab – 30b^2)