(x + 3a)(x - 2a) - (x+a)(x-3a)=0

Question

(x + 3a)(x - 2a) - (x+a)(x-3a)=0

Answer 1

(Х2-2ах+3ах -6а2)-(х2-3ах+ах-3ах) = (х2+ах-6а2)-(х2-5ах)=х2+ах-6а2-х2+5ах=
6ах-6а2 = 6(ах-а2)