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

x2-7xy-18y2 Final result : (x + 2y) • (x - 9y) Reformatting the input:

Changes made to your input should not affect the solution:

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

Step by step solution : Step 1 : Equation at the end of step 1 : ((x2) - 7xy) - (2•32y2) Step 2 : Trying to factor a multi variable polynomial:

2.1 Factoring x2 - 7xy - 18y2

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

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

Final result : (x + 2y) • (x - 9y)