X^2+7xy-18y^2 how do i solve this i'm factoring trinomials

Changes made to your input should not affect the solution:

 (1): "y2"   was replaced by   "y^2".  1 more similar replacement(s).

 2.1    Factoring    x2 - 7xy - 18y2 

Try to factor this multi-variable trinomial using trial and error 

 Found a factorization  :  (x + 2y)•(x - 9y)

answer: the answer is 5/22

step-by-step explanation: if you subtract 17 from 22 the answer is 5 therefore the remainder of students are female

add a pic of the graph, then ill edit this "answer" and solve it for you : 3

step-by-step explanation: