Subtract the polynomials

Question

(6v^2 + 7vd - 3d^2) - (9v^2 - 5vd + 19d^2)

Answer 1

(6v^2 + 7vd - 3d^2) - (9v^2 - 5vd + 19d^2)
= 6v^2 + 7vd - 3d^2 - 9v^2 + 5vd - 19d^2
= ...

easy from there