(x-y)^2-5x+7y and (x-y)^2-y+y^2+x-xy are divisible by 17 prove that xy+15y-12x is also divisible by 17
Kindly refer the link for answer similar to your query:
https://www.meritnation.com/ask-answer/question/if-x-and-y-are-integers-and-17-divides-both-the-expressions/polynomials/11767301
https://www.meritnation.com/ask-answer/question/if-x-and-y-are-integers-and-17-divides-both-the-expressions/polynomials/11767301