Question

分解因式：8m2n+2mn 12xyz－9x2y2 2a(y-z)-3b(z-y) p(a2+b2)-q(a2+b2)

Answer 1

8m^2n+2mn=2mn(4m+n)

12xyz－9x^2y^2 =3xy(4z-3xy)

2a(y-z)-3b(z-y) =2a(y-z)+3b(y-z) =(y-z)(2a+3b)

p(a^2+b^2)-q(a^2+b^2)=(a^2+b^2)(p-q)