Question

Зby - 9xb + 3xa - ya bу 3х - у Divide by factorisation​

Answer 1

Answer:

Step-by-step explanation:

3by-9xb+3xa-ya/3x-y

3b(y-3x) + a(3x-y) /3x-y

-3b(3x-y)- a(3x-y) /3x-y

(-3b-a)(3x-y) /3x-y

(3x-y) & 3x-y will get cut .

So, answer is -3b -a .